Merge pull request #4 from gecrooks/gec004

Fix for breaking changes in setuptools 53.1.0

setup.cfg

@@ -1,22 +1,23 @@
 # Setup Configuration File
 # https://docs.python.org/3/distutils/configfile.html
 # [INI](https://docs.python.org/3/install/index.html#inst-config-syntax) file format.
+# setuptools v53.1.0 no longer recognizes capitalized keys, e.g. "Name" must be "name".
 
 [metadata]
-Metadata-Version: 2.2
-Name = qf_diamond_norm
-Summary =  The diamond norm between two completely positive trace-preserving (CPTP) superoperators
-Long-Description = file:README.md
-Long-Description-Content-Type = text/markdown
-Keywords = quantum-computing,diamond-norm
-Home-page = https://github.com/gecrooks/qf-diamond-norm/
-Author = Gavin E. Crooks
-Author-email = gec@threeplusone.com
-License = Apache-2.0    
-License-File = LICENSE
+metadata-version: 2.2
+name = qf_diamond_norm
+summary =  The diamond norm between two completely positive trace-preserving (CPTP) superoperators
+long-description = file:README.md
+long-description-content-type = text/markdown
+keywords = quantum-computing,diamond-norm
+home-page = https://github.com/gecrooks/qf-diamond-norm/
+author = Gavin E. Crooks
+author-email = gec@threeplusone.com
+license = Apache-2.0
+lcense-File = LICENSE
 
 # https://pypi.org/classifiers/
-Classifiers=
+classifiers=
     Development Status :: 5 - Production/Stable
     Intended Audience :: Science/Research
     Programming Language :: Python