diff --git a/package-lock.json b/package-lock.json
index 33f62e3..43e21af 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -40,6 +40,15 @@
 				"@types/node": "*"
 			}
 		},
+		"@types/keytar": {
+			"version": "4.4.2",
+			"resolved": "https://registry.npmjs.org/@types/keytar/-/keytar-4.4.2.tgz",
+			"integrity": "sha512-xtQcDj9ruGnMwvSu1E2BH4SFa5Dv2PvSPd0CKEBLN5hEj/v5YpXJY+B6hAfuKIbvEomD7vJTc/P1s1xPNh2kRw==",
+			"dev": true,
+			"requires": {
+				"keytar": "*"
+			}
+		},
 		"@types/minimatch": {
 			"version": "3.0.3",
 			"resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.3.tgz",
@@ -103,6 +112,22 @@
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+			"version": "1.2.0",
+			"resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
+			"integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==",
+			"dev": true
+		},
+		"are-we-there-yet": {
+			"version": "1.1.5",
+			"resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
+			"integrity": "sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==",
+			"dev": true,
+			"requires": {
+				"delegates": "^1.0.0",
+				"readable-stream": "^2.0.6"
+			}
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@@ -130,6 +155,12 @@
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 			"dev": true
 		},
+		"base64-js": {
+			"version": "1.3.1",
+			"resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.1.tgz",
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+			"dev": true
+		},
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 			"dev": true
 		},
+		"bl": {
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+			"resolved": "https://registry.npmjs.org/bl/-/bl-4.0.2.tgz",
+			"integrity": "sha512-j4OH8f6Qg2bGuWfRiltT2HYGx0e1QcBTrK9KAHNMwMZdQnDZFk0ZSYIpADjYCB3U12nicC5tVJwSIhwOWjb4RQ==",
+			"dev": true,
+			"requires": {
+				"buffer": "^5.5.0",
+				"inherits": "^2.0.4",
+				"readable-stream": "^3.4.0"
+			},
+			"dependencies": {
+				"readable-stream": {
+					"version": "3.6.0",
+					"resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+					"integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+					"dev": true,
+					"requires": {
+						"inherits": "^2.0.3",
+						"string_decoder": "^1.1.1",
+						"util-deprecate": "^1.0.1"
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 			"dev": true
 		},
+		"buffer": {
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+			"resolved": "https://registry.npmjs.org/buffer/-/buffer-5.6.0.tgz",
+			"integrity": "sha512-/gDYp/UtU0eA1ys8bOs9J6a+E/KWIY+DZ+Q2WESNUA0jFRsJOc0SNUO6xJ5SGA1xueg3NL65W6s+NY5l9cunuw==",
+			"dev": true,
+			"requires": {
+				"base64-js": "^1.0.2",
+				"ieee754": "^1.1.4"
+			}
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@@ -243,6 +308,12 @@
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+			"resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.4.tgz",
+			"integrity": "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==",
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+		},
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@@ -282,6 +353,12 @@
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+			"resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
+			"integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+			"dev": true
+		},
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@@ -309,6 +386,12 @@
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 			"dev": true
 		},
+		"console-control-strings": {
+			"version": "1.1.0",
+			"resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
+			"integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
+			"dev": true
+		},
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@@ -348,6 +431,21 @@
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 			"dev": true
 		},
+		"decompress-response": {
+			"version": "4.2.1",
+			"resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-4.2.1.tgz",
+			"integrity": "sha512-jOSne2qbyE+/r8G1VU+G/82LBs2Fs4LAsTiLSHOCOMZQl2OKZ6i8i4IyHemTe+/yIXOtTcRQMzPcgyhoFlqPkw==",
+			"dev": true,
+			"requires": {
+				"mimic-response": "^2.0.0"
+			}
+		},
+		"deep-extend": {
+			"version": "0.6.0",
+			"resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
+			"integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==",
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+		},
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@@ -357,12 +455,24 @@
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+			"resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
+			"integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
+			"dev": true
+		},
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 			"integrity": "sha1-OjYof1A05pnnV3kBBSwubJQlFjE=",
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+		"detect-libc": {
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+			"resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-1.0.3.tgz",
+			"integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=",
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 			"dev": true
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+		"end-of-stream": {
+			"version": "1.4.4",
+			"resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
+			"integrity": "sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==",
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+			}
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 			"dev": true
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+		"expand-template": {
+			"version": "2.0.3",
+			"resolved": "https://registry.npmjs.org/expand-template/-/expand-template-2.0.3.tgz",
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+		},
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@@ -535,6 +660,12 @@
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+			"resolved": "https://registry.npmjs.org/fs-constants/-/fs-constants-1.0.0.tgz",
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+		"gauge": {
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+			"integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
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+				"wide-align": "^1.1.0"
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+					"dev": true
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+					"integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
+					"dev": true,
+					"requires": {
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+					"resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+					"integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+					"dev": true,
+					"requires": {
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+					"resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+					"integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
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 			"dev": true
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+			"resolved": "https://registry.npmjs.org/github-from-package/-/github-from-package-0.0.0.tgz",
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+		"has-unicode": {
+			"version": "2.0.1",
+			"resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
+			"integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=",
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+			"resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.1.13.tgz",
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 			"dev": true
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+			"resolved": "https://registry.npmjs.org/ini/-/ini-1.3.5.tgz",
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@@ -811,6 +1019,16 @@
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 			"dev": true
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+		"mimic-response": {
+			"version": "2.1.0",
+			"resolved": "https://registry.npmjs.org/mimic-response/-/mimic-response-2.1.0.tgz",
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+		},
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@@ -939,6 +1163,12 @@
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+		},
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+		"napi-build-utils": {
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+			"resolved": "https://registry.npmjs.org/node-abi/-/node-abi-2.18.0.tgz",
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+			"dev": true
+		},
 		"node-environment-flags": {
 			"version": "1.0.6",
 			"resolved": "https://registry.npmjs.org/node-environment-flags/-/node-environment-flags-1.0.6.tgz",
@@ -1009,12 +1260,30 @@
 				"semver": "^5.7.0"
 			}
 		},
+		"noop-logger": {
+			"version": "0.1.1",
+			"resolved": "https://registry.npmjs.org/noop-logger/-/noop-logger-0.1.1.tgz",
+			"integrity": "sha1-lKKxYzxPExdVMAfYlm/Q6EG2pMI=",
+			"dev": true
+		},
 		"normalize-path": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
 			"integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==",
 			"dev": true
 		},
+		"npmlog": {
+			"version": "4.1.2",
+			"resolved": "https://registry.npmjs.org/npmlog/-/npmlog-4.1.2.tgz",
+			"integrity": "sha512-2uUqazuKlTaSI/dC8AzicUck7+IrEaOnN/e0jd3Xtt1KcGpwx30v50mL7oPyr/h9bL3E4aZccVwpwP+5W9Vjkg==",
+			"dev": true,
+			"requires": {
+				"are-we-there-yet": "~1.1.2",
+				"console-control-strings": "~1.1.0",
+				"gauge": "~2.7.3",
+				"set-blocking": "~2.0.0"
+			}
+		},
 		"nth-check": {
 			"version": "1.0.2",
 			"resolved": "https://registry.npmjs.org/nth-check/-/nth-check-1.0.2.tgz",
@@ -1024,6 +1293,18 @@
 				"boolbase": "~1.0.0"
 			}
 		},
+		"number-is-nan": {
+			"version": "1.0.1",
+			"resolved": "https://registry.npmjs.org/number-is-nan/-/number-is-nan-1.0.1.tgz",
+			"integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
+			"dev": true
+		},
+		"object-assign": {
+			"version": "4.1.1",
+			"resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+			"integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=",
+			"dev": true
+		},
 		"object-inspect": {
 			"version": "1.7.0",
 			"resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.7.0.tgz",
@@ -1167,6 +1448,29 @@
 			"integrity": "sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==",
 			"dev": true
 		},
+		"prebuild-install": {
+			"version": "5.3.4",
+			"resolved": "https://registry.npmjs.org/prebuild-install/-/prebuild-install-5.3.4.tgz",
+			"integrity": "sha512-AkKN+pf4fSEihjapLEEj8n85YIw/tN6BQqkhzbDc0RvEZGdkpJBGMUYx66AAMcPG2KzmPQS7Cm16an4HVBRRMA==",
+			"dev": true,
+			"requires": {
+				"detect-libc": "^1.0.3",
+				"expand-template": "^2.0.3",
+				"github-from-package": "0.0.0",
+				"minimist": "^1.2.3",
+				"mkdirp": "^0.5.1",
+				"napi-build-utils": "^1.0.1",
+				"node-abi": "^2.7.0",
+				"noop-logger": "^0.1.1",
+				"npmlog": "^4.0.1",
+				"pump": "^3.0.0",
+				"rc": "^1.2.7",
+				"simple-get": "^3.0.3",
+				"tar-fs": "^2.0.0",
+				"tunnel-agent": "^0.6.0",
+				"which-pm-runs": "^1.0.0"
+			}
+		},
 		"process-nextick-args": {
 			"version": "2.0.1",
 			"resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
@@ -1179,6 +1483,28 @@
 			"integrity": "sha1-0/wRS6BplaRexok/SEzrHXj19HY=",
 			"dev": true
 		},
+		"pump": {
+			"version": "3.0.0",
+			"resolved": "https://registry.npmjs.org/pump/-/pump-3.0.0.tgz",
+			"integrity": "sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==",
+			"dev": true,
+			"requires": {
+				"end-of-stream": "^1.1.0",
+				"once": "^1.3.1"
+			}
+		},
+		"rc": {
+			"version": "1.2.8",
+			"resolved": "https://registry.npmjs.org/rc/-/rc-1.2.8.tgz",
+			"integrity": "sha512-y3bGgqKj3QBdxLbLkomlohkvsA8gdAiUQlSBJnBhfn+BPxg4bc62d8TcBW15wavDfgexCgccckhcZvywyQYPOw==",
+			"dev": true,
+			"requires": {
+				"deep-extend": "^0.6.0",
+				"ini": "~1.3.0",
+				"minimist": "^1.2.0",
+				"strip-json-comments": "~2.0.1"
+			}
+		},
 		"read": {
 			"version": "1.0.7",
 			"resolved": "https://registry.npmjs.org/read/-/read-1.0.7.tgz",
@@ -1260,6 +1586,29 @@
 			"integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc=",
 			"dev": true
 		},
+		"signal-exit": {
+			"version": "3.0.3",
+			"resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.3.tgz",
+			"integrity": "sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA==",
+			"dev": true
+		},
+		"simple-concat": {
+			"version": "1.0.0",
+			"resolved": "https://registry.npmjs.org/simple-concat/-/simple-concat-1.0.0.tgz",
+			"integrity": "sha1-c0TLuLbib7J9ZrL8hvn21Zl1IcY=",
+			"dev": true
+		},
+		"simple-get": {
+			"version": "3.1.0",
+			"resolved": "https://registry.npmjs.org/simple-get/-/simple-get-3.1.0.tgz",
+			"integrity": "sha512-bCR6cP+aTdScaQCnQKbPKtJOKDp/hj9EDLJo3Nw4y1QksqaovlW/bnptB6/c1e+qmNIDHRK+oXFDdEqBT8WzUA==",
+			"dev": true,
+			"requires": {
+				"decompress-response": "^4.2.0",
+				"once": "^1.3.1",
+				"simple-concat": "^1.0.0"
+			}
+		},
 		"sprintf-js": {
 			"version": "1.0.3",
 			"resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
@@ -1357,6 +1706,44 @@
 			"integrity": "sha512-4WK/bYZmj8xLr+HUCODHGF1ZFzsYffasLUgEiMBY4fgtltdO6B4WJtlSbPaDTLpYTcGVwM2qLnFTICEcNxs3kA==",
 			"dev": true
 		},
+		"tar-fs": {
+			"version": "2.1.0",
+			"resolved": "https://registry.npmjs.org/tar-fs/-/tar-fs-2.1.0.tgz",
+			"integrity": "sha512-9uW5iDvrIMCVpvasdFHW0wJPez0K4JnMZtsuIeDI7HyMGJNxmDZDOCQROr7lXyS+iL/QMpj07qcjGYTSdRFXUg==",
+			"dev": true,
+			"requires": {
+				"chownr": "^1.1.1",
+				"mkdirp-classic": "^0.5.2",
+				"pump": "^3.0.0",
+				"tar-stream": "^2.0.0"
+			}
+		},
+		"tar-stream": {
+			"version": "2.1.3",
+			"resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-2.1.3.tgz",
+			"integrity": "sha512-Z9yri56Dih8IaK8gncVPx4Wqt86NDmQTSh49XLZgjWpGZL9GK9HKParS2scqHCC4w6X9Gh2jwaU45V47XTKwVA==",
+			"dev": true,
+			"requires": {
+				"bl": "^4.0.1",
+				"end-of-stream": "^1.4.1",
+				"fs-constants": "^1.0.0",
+				"inherits": "^2.0.3",
+				"readable-stream": "^3.1.1"
+			},
+			"dependencies": {
+				"readable-stream": {
+					"version": "3.6.0",
+					"resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+					"integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+					"dev": true,
+					"requires": {
+						"inherits": "^2.0.3",
+						"string_decoder": "^1.1.1",
+						"util-deprecate": "^1.0.1"
+					}
+				}
+			}
+		},
 		"tmp": {
 			"version": "0.0.29",
 			"resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.29.tgz",
@@ -1446,6 +1833,15 @@
 			"integrity": "sha1-LTeFoVjBdMmhbcLARuxfxfF0IhM=",
 			"dev": true
 		},
+		"tunnel-agent": {
+			"version": "0.6.0",
+			"resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+			"integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
+			"dev": true,
+			"requires": {
+				"safe-buffer": "^5.0.1"
+			}
+		},
 		"typed-rest-client": {
 			"version": "1.2.0",
 			"resolved": "https://registry.npmjs.org/typed-rest-client/-/typed-rest-client-1.2.0.tgz",
@@ -1540,6 +1936,12 @@
 			"integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
 			"dev": true
 		},
+		"which-pm-runs": {
+			"version": "1.0.0",
+			"resolved": "https://registry.npmjs.org/which-pm-runs/-/which-pm-runs-1.0.0.tgz",
+			"integrity": "sha1-Zws6+8VS4LVd9rd4DKdGFfI60cs=",
+			"dev": true
+		},
 		"wide-align": {
 			"version": "1.1.3",
 			"resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
diff --git a/package.json b/package.json
index 37519ba..fa564f7 100644
--- a/package.json
+++ b/package.json
@@ -47,6 +47,7 @@
     "@types/glob": "^7.1.1",
     "@types/mocha": "^5.2.6",
     "@types/node": "^8.10.60",
+    "@types/keytar": "^4.4.2",
     "glob": "^7.1.6",
     "mocha": "^7.1.2",
     "ts-loader": "^6.2.2",
@@ -56,7 +57,13 @@
     "vscode-test": "^1.3.0"
   },
   "main": "./out/extension",
-  "activationEvents": [],
+  "activationEvents": [
+    "onCommand:intersystems-community.servermanager.testPickServer",
+    "onCommand:intersystems-community.servermanager.testPickServerFlushingCachedCredentials",
+    "onCommand:intersystems-community.servermanager.testPickServerDetailed",
+    "onCommand:intersystems-community.servermanager.storePassword",
+    "onCommand:intersystems-community.servermanager.clearPassword"
+  ],
   "contributes": {
     "configuration": {
       "title": "InterSystems® Server Manager",
@@ -73,7 +80,7 @@
                 "host": "127.0.0.1",
                 "port": 52773
               },
-              "description": "Connection to default local InterSystems IRIS™ installation. Delete if unwanted."
+              "description": "Connection to local InterSystems IRIS™ installed with default settings."
             },
             "cache": {
               "webServer": {
@@ -81,7 +88,7 @@
                 "host": "127.0.0.1",
                 "port": 57772
               },
-              "description": "Connection to default local InterSystems Caché® installation. Delete if unwanted."
+              "description": "Connection to local InterSystems Caché® installed with default settings."
             },
             "ensemble": {
               "webServer": {
@@ -89,7 +96,7 @@
                 "host": "127.0.0.1",
                 "port": 57772
               },
-              "description": "Connection to default local InterSystems Ensemble® installation. Delete if unwanted."
+              "description": "Connection to local InterSystems Ensemble® installed with default settings."
             },
             "/default": "iris"
           },
@@ -151,7 +158,8 @@
                 },
                 "password": {
                   "type": "string",
-                  "description": "Password of username. If not set here it must be provided when connecting."
+                  "description": "Password of username.",
+                  "deprecationMessage": "Storing password in plaintext is not recommended. Instead, use the Command Palette command to store it in your keychain."
                 },
                 "description": {
                   "type": "string",
@@ -173,6 +181,33 @@
           "additionalProperties": false
         }
       }
-    }
+    },
+    "commands": [
+      {
+        "command": "intersystems-community.servermanager.storePassword",
+        "category": "InterSystems Server Manager",
+        "title": "Store Password in Keychain"
+      },
+      {
+        "command": "intersystems-community.servermanager.clearPassword",
+        "category": "InterSystems Server Manager",
+        "title": "Clear Password from Keychain"
+      },
+      {
+        "command": "intersystems-community.servermanager.testPickServer",
+        "category": "InterSystems Server Manager",
+        "title": "Test Server Selection"
+      },
+      {
+        "command": "intersystems-community.servermanager.testPickServerFlushingCachedCredentials",
+        "category": "InterSystems Server Manager",
+        "title": "Test Server Selection (flush cached credentials)"
+      },
+      {
+        "command": "intersystems-community.servermanager.testPickServerDetailed",
+        "category": "InterSystems Server Manager",
+        "title": "Test Server Selection with Details"
+      }
+    ]
   }
 }
diff --git a/src/api/getServerNames.ts b/src/api/getServerNames.ts
new file mode 100644
index 0000000..0a28613
--- /dev/null
+++ b/src/api/getServerNames.ts
@@ -0,0 +1,32 @@
+import * as vscode from 'vscode';
+import { ServerName, ServerSpec } from '../extension';
+
+export function getServerNames(scope?: vscode.ConfigurationScope): ServerName[] {
+    let names: ServerName[] = [];
+    const servers = vscode.workspace.getConfiguration('intersystems', scope).get('servers');
+
+    if (typeof servers === 'object' && servers) {
+        const defaultName: string = servers['/default'] || '';
+        if (defaultName.length > 0 && servers[defaultName]) {
+            names.push({
+                name: defaultName,
+                description: `${servers[defaultName].description || ''} (default)`,
+                detail: serverDetail(servers[defaultName])
+            });
+        }
+        for (const key in servers) {
+            if (!key.startsWith('/') && key !== defaultName) {
+                names.push({
+                    name: key,
+                    description: servers[key].description || '',
+                    detail: serverDetail(servers[key])
+                });
+            }
+        }
+    }
+    return names;
+}
+
+function serverDetail(connSpec: ServerSpec): string {
+    return `${connSpec.webServer.scheme || 'http'}://${connSpec.webServer.host}:${connSpec.webServer.port}/${connSpec.webServer.pathPrefix || ''}`;
+}
\ No newline at end of file
diff --git a/src/api/getServerSpec.ts b/src/api/getServerSpec.ts
new file mode 100644
index 0000000..52db7e7
--- /dev/null
+++ b/src/api/getServerSpec.ts
@@ -0,0 +1,89 @@
+import * as vscode from 'vscode';
+import { ServerSpec } from '../extension';
+import { Keychain } from '../keychain';
+
+interface CredentialSet {
+    username: string,
+    password: string
+}
+
+export let credentialCache = new Map<string, CredentialSet>();
+
+export async function getServerSpec(name: string, scope?: vscode.ConfigurationScope, flushCredentialCache: boolean = false): Promise<ServerSpec | undefined> {
+    if (flushCredentialCache) {
+        credentialCache[name] = undefined;
+    }
+    let server: ServerSpec | undefined = vscode.workspace.getConfiguration('intersystems.servers', scope).get(name);
+
+    // Unknown server
+    if (!server) {
+        return undefined;
+    }
+
+    server.name = name;
+    server.description = server.description || '';
+    server.webServer.scheme = server.webServer.scheme || 'http';
+    server.webServer.pathPrefix = server.webServer.pathPrefix || '';
+
+    // Obtain a username (including blank to try connecting anonymously)
+    if (!server.username) {
+        await vscode.window
+            .showInputBox({
+                placeHolder: `Username to connect to InterSystems server '${name}' as`,
+                prompt: 'Leave empty to attempt unauthenticated access',
+                ignoreFocusOut: true,
+            })
+            .then((username) => {
+                if (username && server) {
+                    server.username = username;
+                } else {
+                    return undefined;
+                }
+            });
+        if (!server.username) {
+            server.username = '';
+            server.password = '';
+        }
+    }
+
+    // Obtain password from session cache or keychain unless trying to connect anonymously
+    if (server.username && !server.password) {
+        if (credentialCache[name] && credentialCache[name].username === server.username) {
+            server.password = credentialCache[name];
+        } else {
+            const keychain = new Keychain(name);
+            const password = await keychain.getPassword().then(result => {
+                if (typeof result === 'string') {
+                    return result;
+                } else {
+                    return undefined;
+                }
+            });
+            if (password) {
+                server.password = password;
+                credentialCache[name] = {username: server.username, password: password};
+            }
+        }
+
+    }
+    if (server.username && !server.password) {
+        await vscode.window
+            .showInputBox({
+                password: true,
+                placeHolder: `Password for user '${server.username}' on InterSystems server '${name}'`,
+                validateInput: (value => {
+                    return value.length > 0 ? '' : 'Mandatory field';
+                }),
+                ignoreFocusOut: true,
+            })
+            .then((password) => {
+                if (password && server) {
+                    server.password = password;
+                    credentialCache[name] = {username: server.username, password: password};
+                } else {
+                    server = undefined;
+                }
+            })
+    }
+    return server;
+}
diff --git a/src/api/pickServer.ts b/src/api/pickServer.ts
new file mode 100644
index 0000000..225b402
--- /dev/null
+++ b/src/api/pickServer.ts
@@ -0,0 +1,19 @@
+import * as vscode from 'vscode';
+import { getServerNames } from './getServerNames';
+
+export async function pickServer(scope?: vscode.ConfigurationScope, options: vscode.QuickPickOptions = {}): Promise<string | undefined> {
+    const names = getServerNames(scope);
+
+    let qpItems: vscode.QuickPickItem[] = [];
+
+    options.matchOnDescription = options?.matchOnDescription || true;
+    options.placeHolder = options?.placeHolder || 'Pick an InterSystems server';
+    options.canPickMany = false;
+
+    names.forEach(element => {
+        qpItems.push({label: element.name, description: element.description, detail: options?.matchOnDetail ? element.detail : undefined});
+    });
+    return await vscode.window.showQuickPick(qpItems, options).then(item => {
+        return item ? item.label : undefined;
+    });
+}
\ No newline at end of file
diff --git a/src/commands/managePasswords.ts b/src/commands/managePasswords.ts
new file mode 100644
index 0000000..3776bd4
--- /dev/null
+++ b/src/commands/managePasswords.ts
@@ -0,0 +1,59 @@
+import * as vscode from 'vscode';
+import { extensionId } from '../extension';
+import { Keychain } from '../keychain';
+import { credentialCache } from '../api/getServerSpec';
+
+export async function storePassword() {
+    const name = await commonPickServer({matchOnDetail: true});
+    if (name) {
+        await vscode.window
+        .showInputBox({
+            password: true,
+            placeHolder: 'Password to store in keychain',
+            prompt: `For connection to InterSystems server '${name}'`,
+            validateInput: (value => {
+                return value.length > 0 ? '' : 'Mandatory field';
+            }),
+            ignoreFocusOut: true,
+        })
+        .then((password) => {
+            if (password) {
+                credentialCache[name] = undefined;
+                new Keychain(name).setPassword(password).then(() => {
+                    vscode.window.showInformationMessage(`Password for '${name}' stored in keychain.`);
+                });
+            }
+        })
+     
+    }
+}
+
+export async function clearPassword() {
+    const name = await commonPickServer({matchOnDetail: true});
+    if (name) {
+        credentialCache[name] = undefined;
+        const keychain = new Keychain(name);
+        if (!await keychain.getPassword()) {
+            vscode.window.showWarningMessage(`No password for '${name}' found in keychain.`);          
+        } else if (await keychain.deletePassword()) {
+            vscode.window.showInformationMessage(`Password for '${name}' removed from keychain.`);
+        } else {
+            vscode.window.showWarningMessage(`Failed to remove password for '${name}' from keychain.`);
+        }
+    }
+}
+
+async function commonPickServer(options?: vscode.QuickPickOptions): Promise<string | undefined> {
+    // Deliberately uses its own API to illustrate how other extensions would
+    const serverManagerExtension = vscode.extensions.getExtension(extensionId);
+    if (!serverManagerExtension) {
+        vscode.window.showErrorMessage(`Extension '${extensionId}' is not installed, or has been disabled.`)
+        return;
+    }
+    if (!serverManagerExtension.isActive) {
+        serverManagerExtension.activate();
+    }
+    const myApi = serverManagerExtension.exports;
+
+    return await myApi.pickServer(undefined, options);
+}
\ No newline at end of file
diff --git a/src/commands/testPickServer.ts b/src/commands/testPickServer.ts
new file mode 100644
index 0000000..f334b51
--- /dev/null
+++ b/src/commands/testPickServer.ts
@@ -0,0 +1,35 @@
+import * as vscode from 'vscode';
+import { extensionId, ServerSpec } from '../extension';
+
+export async function testPickServer() {
+    await commonTestPickServer();
+}
+
+export async function testPickServerWithoutCachedCredentials() {
+    await commonTestPickServer(undefined, true);
+}
+
+export async function testPickServerDetailed() {
+    await commonTestPickServer({matchOnDetail: true});
+}
+
+async function commonTestPickServer(options?: vscode.QuickPickOptions, flushCredentialCache: boolean = false) {
+    // Deliberately uses its own API in the same way as other extensions would
+    const serverManagerExtension = vscode.extensions.getExtension(extensionId);
+    if (!serverManagerExtension) {
+        vscode.window.showErrorMessage(`Extension '${extensionId}' is not installed, or has been disabled.`)
+        return
+    }
+    if (!serverManagerExtension.isActive) {
+        serverManagerExtension.activate();
+    }
+    const myApi = serverManagerExtension.exports;
+
+    const name: string = await myApi.pickServer(undefined, options);
+    if (name) {
+        const connSpec: ServerSpec = await myApi.getServerSpec(name, undefined, flushCredentialCache);
+        if (connSpec) {
+            vscode.window.showInformationMessage(`Picked server '${connSpec.name}' at ${connSpec.webServer.scheme}://${connSpec.webServer.host}:${connSpec.webServer.port}/${connSpec.webServer.pathPrefix} ${!connSpec.username ? 'with unauthenticated access' : 'as user ' + connSpec.username }.`, 'OK');
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/extension.ts b/src/extension.ts
index b57bb6e..ce5c3b0 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -1,9 +1,82 @@
 'use strict';
-export const extensionId = "intersystems-community.servermanager";
+export const extensionId = 'intersystems-community.servermanager';
 
 import * as vscode from 'vscode';
+import { testPickServer, testPickServerWithoutCachedCredentials as testPickServerFlushingCachedCredentials, testPickServerDetailed } from './commands/testPickServer';
+import { pickServer } from './api/pickServer';
+import { getServerNames } from './api/getServerNames';
+import { getServerSpec } from './api/getServerSpec';
+import { storePassword, clearPassword } from './commands/managePasswords';
+
+export interface ServerName {
+    name: string,
+    description: string,
+    detail: string
+}
+
+export interface WebServerSpec {
+    scheme: string,
+    host: string,
+    port: number,
+    pathPrefix: string
+}
+
+export interface ServerSpec {
+    name: string,
+    webServer: WebServerSpec,
+    username: string,
+    password: string,
+    description: string
+}
 
 export function activate(context: vscode.ExtensionContext) {
+
+
+	// Register the commands
+	context.subscriptions.push(
+		vscode.commands.registerCommand(`${extensionId}.storePassword`, () => {
+            storePassword();
+        })
+    );
+	context.subscriptions.push(
+		vscode.commands.registerCommand(`${extensionId}.clearPassword`, () => {
+            clearPassword();
+        })
+    );
+
+	context.subscriptions.push(
+		vscode.commands.registerCommand(`${extensionId}.testPickServer`, () => {
+            testPickServer();
+        })
+    );
+	context.subscriptions.push(
+		vscode.commands.registerCommand(`${extensionId}.testPickServerFlushingCachedCredentials`, () => {
+            testPickServerFlushingCachedCredentials();
+        })
+    );
+	context.subscriptions.push(
+		vscode.commands.registerCommand(`${extensionId}.testPickServerDetailed`, () => {
+            testPickServerDetailed();
+        })
+    );
+
+    let api = {
+        async pickServer(scope?: vscode.ConfigurationScope, options: vscode.QuickPickOptions = {}): Promise<string | undefined> {
+            return await pickServer(scope, options);
+
+        },
+        getServerNames(scope?: vscode.ConfigurationScope): ServerName[] {
+            return getServerNames(scope);
+        },
+
+        async getServerSpec(name: string, scope?: vscode.ConfigurationScope, flushCredentialCache: boolean = false): Promise<ServerSpec | undefined> {
+            return await getServerSpec(name, scope, flushCredentialCache);
+        }
+
+    };
+
+    // 'export' public api-surface
+    return api;
 }
 
 export function deactivate() {
diff --git a/src/keychain.ts b/src/keychain.ts
new file mode 100644
index 0000000..06faea3
--- /dev/null
+++ b/src/keychain.ts
@@ -0,0 +1,67 @@
+// Access the keytar native module shipped in vscode
+import type * as keytarType from 'keytar';
+import * as vscode from 'vscode';
+import logger from './logger';
+import { extensionId } from './extension';
+
+function getKeytar(): Keytar | undefined {
+	try {
+		return require('keytar');
+	} catch (err) {
+		console.log(err);
+	}
+
+	return undefined;
+}
+
+export type Keytar = {
+	getPassword: typeof keytarType['getPassword'];
+	setPassword: typeof keytarType['setPassword'];
+	deletePassword: typeof keytarType['deletePassword'];
+};
+
+export class Keychain {
+	private keytar: Keytar;
+	private serviceId: string;
+	private accountId: string;
+
+	constructor(connectionName: string) {
+		const keytar = getKeytar();
+		if (!keytar) {
+			throw new Error('System keychain unavailable');
+		}
+
+		this.keytar = keytar;
+		this.serviceId = `${vscode.env.uriScheme}-${extensionId}:password`;
+		this.accountId = connectionName;
+	}
+
+	async setPassword(password: string): Promise<void> {
+		try {
+			return await this.keytar.setPassword(this.serviceId, this.accountId, password);
+		} catch (e) {
+			// Ignore
+			await vscode.window.showErrorMessage(`Writing password to the keychain failed with error '{0}'.`, e.message);
+		}
+	}
+
+	async getPassword(): Promise<string | null | undefined> {
+		try {
+			return await this.keytar.getPassword(this.serviceId, this.accountId);
+		} catch (e) {
+			// Ignore
+			logger.error(`Getting password failed: ${e}`);
+			return Promise.resolve(undefined);
+		}
+	}
+
+	async deletePassword(): Promise<boolean | undefined> {
+		try {
+			return await this.keytar.deletePassword(this.serviceId, this.accountId);
+		} catch (e) {
+			// Ignore
+			logger.error(`Deleting password failed: ${e}`);
+			return Promise.resolve(undefined);
+		}
+	}
+}
\ No newline at end of file
diff --git a/src/logger.ts b/src/logger.ts
new file mode 100644
index 0000000..cf6c404
--- /dev/null
+++ b/src/logger.ts
@@ -0,0 +1,74 @@
+import * as vscode from 'vscode';
+
+export interface Logger {
+  trace(message: string, ...args: any[]): void;
+  debug(message: string, ...args: any[]): void;
+  info(message: string, ...args: any[]): void;
+  warn(message: string, ...args: any[]): void;
+  error(message: string | Error, ...args: any[]): void;
+  critical(message: string | Error, ...args: any[]): void;
+}
+
+class VSCodeLogger implements Logger {
+  private _outputChannel: vscode.OutputChannel;
+  private _createDate: Date = new Date();
+
+  trace(message: string, ...args: any[]):Date {
+    return this._commonTrace(undefined, message, ...args);
+  }
+
+  endTrace(since: Date, message: string, ...args: any[]):Date {
+    return this._commonTrace(since, message, ...args);
+  }
+
+  private _commonTrace(since: Date | undefined, message: string, ...args: any[]):Date {
+    const now = new Date();
+    const sinceStart = `${((now.valueOf() - this._createDate.valueOf()) / 1000).toFixed(3)} `;
+    const sinceLastTrace = (since) ? `(+${(now.valueOf() - since.valueOf()) / 1000}) ` : '';
+    this._print(`[trace@${sinceStart}${sinceLastTrace}]`, message, ...args);
+    return now;
+  }
+
+  debug(message: string, ...args: any[]) {
+    this._print('[debug]', message, ...args);
+  }
+
+  info(message: string, ...args: any[]) {
+    this._print('[info]', message, ...args);
+  }
+
+  warn(message: string, ...args: any[]) {
+    this._print('[warn]', message, ...args);
+  }
+
+  error(message: string | Error, ...args: any[]) {
+    this._print('[error]', message, ...args);
+  }
+
+  critical(message: string | Error, ...args: any[]) {
+    this._print('[critical]', message, ...args);
+  }
+
+  private _print(...args: any[]) {
+    if (!this._outputChannel) {
+      this._outputChannel = vscode.window.createOutputChannel('InterSystems Server Manager');
+    }
+
+    const msg = args
+      .map(arg => {
+        if (arg instanceof Error) {
+          return arg.stack;
+        } else if (typeof arg === 'object') {
+          return JSON.stringify(arg);
+        }
+        return arg;
+      })
+      .join(' ');
+
+    this._outputChannel.appendLine(msg);
+  }
+}
+
+const logger = new VSCodeLogger();
+
+export default logger;
diff --git a/src/test/suite/extension.test.ts b/src/test/suite/extension.test.ts
index 5c708d1..b35569e 100644
--- a/src/test/suite/extension.test.ts
+++ b/src/test/suite/extension.test.ts
@@ -8,7 +8,7 @@ import { extensionId } from "../../extension";
 
 suite("Extension Test Suite", () => {
   suiteSetup(async function () {
-    // make sure git is activated
+    // make sure extension is activated
     const ext = extensions.getExtension(extensionId);
     await ext?.activate();
   });