Update scala-library to 2.13.12 (#153)

* Update scala-library to 2.13.12

* Fix warns.

* Update selenium-java.

* Upgrade ci actions.

.github/workflows/ci.yml

@@ -11,8 +11,8 @@ jobs:
   coverage:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
-      - uses: olafurpg/setup-scala@v13
+      - uses: actions/checkout@v2
+      - uses: coursier/setup-action@v1
       - name: branch-names
         id: branch-name
         uses: tj-actions/branch-names@v2.2

build.sbt

@@ -13,15 +13,15 @@ lazy val root = (project in file(".")).settings(
       url("https://github.com/zhongl")
     )
   ),
-  scalaVersion      := "2.13.8",
+  scalaVersion      := "2.13.12",
   semanticdbEnabled := true,
   semanticdbVersion := scalafixSemanticdb.revision,
   scalafmtOnCompile := true,
   scalacOptions += "-deprecation",
   scalacOptions += "-Wunused",
   resolvers += "Artima Maven Repository" at "https://repo.artima.com/releases",
   libraryDependencies ++= Seq(
-    "org.seleniumhq.selenium" % "selenium-java"      % "4.13.0",
+    "org.seleniumhq.selenium" % "selenium-java"      % "4.15.0",
     "com.lihaoyi"             % "ammonite"           % "2.5.11" cross CrossVersion.full,
     "org.typelevel"          %% "cats-free"          % "2.10.0",
     "org.scalatest"          %% "scalatest-wordspec" % "3.2.17" % Test,

src/main/scala/webot/as.scala

@@ -6,16 +6,16 @@ trait As[A] {
 object As {
   def apply[A](implicit ins: As[A]): As[A] = ins
 
-  implicit val asBoolean = new As[Boolean] {
+  implicit val asBoolean: As[Boolean] = new As[Boolean] {
     def from(value: String) = value.toBoolean
   }
-  implicit val asByte = new As[Byte] {
+  implicit val asByte: As[Byte] = new As[Byte] {
     def from(value: String) = value.toByte
   }
-  implicit val asInt = new As[Int] {
+  implicit val asInt: As[Int] = new As[Int] {
     def from(value: String) = value.toInt
   }
-  implicit val asDouble = new As[Double] {
+  implicit val asDouble: As[Double] = new As[Double] {
     def from(value: String) = value.toDouble
   }
 

src/main/scala/webot/element.scala

@@ -12,7 +12,7 @@ object Element {
       def apply[A](op: Operator[A]): ControlOr[A] = instance.apply(self).apply(op)
     }
 
-    implicit def asElementOps[A](a: A)(implicit e: Element[A]) = new Ops[A] {
+    implicit def asElementOps[A](a: A)(implicit e: Element[A]): Ops[A] = new Ops[A] {
       val self     = a
       val instance = e
     }