feat(CI): switch from travis to GH actions (#12)

* feat(CI): add rudimentary GH actions workflow

* dump github context

* fix indent

* split test and publish workflows

* use branch ref for tags

* do not run tests.yml for tags, also test 1.6 in publish.yml

* quote branch match in tests.yml

* empty commit

* non empty commit

* back to single file, if: all the release steps

* maybe that will properly match

* maybe that will properly match the second

* maybe that

* now releases

* verify this actually tries to match

* test

* chore: delete .travis.yml

* run tests on pull_requests also, publish only on tags

* publish.yml: match on branches `refs/tags/*`

* don't run tests.yml for tags

* match everything

* match master

* match feat/ci

* remove others

* fully qualify ref

* fully qualify ref the second

* infinite depth

* everything infinite depth

* remove

* star

* two stars

* emtpy

* when in doubt, add more stars

* skip tags

* remove tags clause

* refspec

* everything except tags, again

* another star

* double the stars and add a slash

* try hardcoding branch prefixes

* tags? no such thing here

* commit

* tags

* remove job level ifs add dry run to hex script

* remove prod env

* provide key

* fix spelling of 'secrets'

* arm publish workflow

* add eol

.github/workflows/publish.yml

@@ -0,0 +1,74 @@
+name: Publish
+
+on:
+  push:
+    tags:
+      - '*'
+      - '*/**'
+      - '**/**'
+
+jobs:
+  # Redundant but can't be helped AFAIK
+  test-elixir-min-version:
+    name: Elixir 1.6 - Only Tests
+
+    runs-on: ubuntu-latest
+
+    container:
+      image: spaceeec/elixir:1.6-slim
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install Dependencies
+      run: |
+        mix local.rebar --force
+        mix local.hex --force
+        mix deps.get
+    - name: Tests
+      run: mix test
+
+  test-elixir-latest:
+    name: Elixir 1.9 - Full
+
+    runs-on: ubuntu-latest
+
+    container:
+      image: spaceeec/elixir:1.9-slim
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install Dependencies
+      run: |
+        mix local.rebar --force
+        mix local.hex --force
+        mix deps.get
+    - name: Formatting
+      run: mix format --check-formatted
+    - name: Credo
+      run: mix credo --strict
+    - name: Tests
+      run: mix test
+
+  release:
+    name: Publish
+
+    needs: [test-elixir-latest, test-elixir-min-version]
+
+    runs-on: ubuntu-latest
+
+    container:
+      image: spaceeec/elixir:1.9-slim
+
+    steps:
+      - uses: actions/checkout@v1
+      - name: Install Dependencies
+        run: |
+          mix local.rebar --force
+          mix local.hex --force
+          mix deps.get
+      - name: Compile
+        run: mix compile
+      - name: Publish
+        env:
+          HEX_API_KEY: ${{ secrets.HEX_API_KEY }}
+        run: mix hex.publish --yes

.github/workflows/tests.yml

@@ -0,0 +1,55 @@
+name: Tests
+
+on:
+  push:
+    branches:
+      - '*'
+      - 'feat/*'
+      - 'docs/*'
+      - 'fix/*'
+      - 'refactor/*'
+    tags:
+      - '!*'
+      - '!*/**'
+      - '!**/**'
+
+jobs:
+  test-elixir-min-version:
+    name: Elixir 1.6 - Only Tests
+
+    runs-on: ubuntu-latest
+
+    container:
+      image: spaceeec/elixir:1.6-slim
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install Dependencies
+      run: |
+        mix local.rebar --force
+        mix local.hex --force
+        mix deps.get
+    - name: Tests
+      run: mix test
+
+  test-elixir-latest:
+    name: Elixir 1.9 - Full
+
+    runs-on: ubuntu-latest
+
+    container:
+      image: spaceeec/elixir:1.9-slim
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install Dependencies
+      run: |
+        mix local.rebar --force
+        mix local.hex --force
+        mix deps.get
+    - name: Formatting
+      run: mix format --check-formatted
+    - name: Credo
+      run: mix credo --strict
+    - name: Tests
+      run: mix test