Migrate most tests to GH Actions for CI

.gitattributes

@@ -0,0 +1,2 @@
+* eol=lf
+*.png eol=autocrlf

.github/workflows/ci.yml

@@ -0,0 +1,44 @@
+name: CI
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+jobs:
+  test:
+    name: ${{ matrix.command }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        command:
+          - "ci-211"
+          - "ci-212"
+    steps:
+      - uses: actions/checkout@v2
+      - uses: olafurpg/setup-scala@v7
+      - run: sbt ${{ matrix.command }}
+  jdk11:
+    name: JDK11 tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: olafurpg/setup-scala@v7
+        with:
+          java-version: adopt@1.11
+      - run: sbt ci-212
+  windows:
+    name: Windows tests
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: olafurpg/setup-scala@v7
+      - run: sbt ci-212-windows
+        shell: bash
+  checks:
+    name: Scalafmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: olafurpg/setup-scala@v7
+      - run: ./scalafmt --test

.jvmopts

@@ -1,8 +1,7 @@
--Dfile.encoding=UTF8
--Xss8m
+-Xss4m
 -Xms1G
--Xmx4G
--XX:ReservedCodeCacheSize=250M
+-Xmx2G
+-XX:ReservedCodeCacheSize=1024m
 -XX:+TieredCompilation
--XX:-UseGCOverheadLimit
 -XX:+CMSClassUnloadingEnabled
+-Dfile.encoding=UTF-8

.travis.yml

@@ -11,21 +11,8 @@ before_install:
     fi
 jobs:
   include:
-    - name: Scalafmt
-      script: ./scalafmt --test
-    - name: 2.11
-      script: ./sbt ci-211
-    - name: 2.12
-      script: ./sbt ci-212
-    - jdk: openjdk11
-      name: 2.12
-      script: ./sbt ci-212
-
-    # Disabled until stable v0.6
-    # - env: TEST="mima"
-    #   script: sbt mima
     - stage: release
-      script: ./sbt docs/docusaurusPublishGhpages
+      script: ./sbt ci-release docs/docusaurusPublishGhpages
 
 cache:
   directories:

project/Dependencies.scala

@@ -2,7 +2,7 @@ import sbt._
 /* scalafmt: { maxColumn = 120 }*/
 
 object Dependencies {
-  val scalametaV = "4.3.6"
+  val scalametaV = "4.3.7"
   val metaconfigV = "0.9.9"
   def scala210 = "2.10.7"
   def scala211 = "2.11.12"