Providing (almost) full test matrix in GitHub actions (#14)

* Providing full test matrix
* Only testing Go version with module support on GitHub actions
* Only testing legacy versions on travis. Will be deprecated in time

.github/workflows/build.yml

@@ -11,15 +11,16 @@ jobs:
   build:
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
-        go: [1.14, 1.15, 1.16]
+        go: [1.11, 1.12, 1.13, 1.14, 1.15, 1.16]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ matrix.go }}
+          go-version: "${{ matrix.go }}"
       - name: Build
         run: |
           go vet ./...

.travis.yml

@@ -5,9 +5,8 @@ script:
     - go test -v ./...
 
 go:
-  - 1.3
-  - 1.4
-  - 1.5
-  - 1.6
   - 1.7
+  - 1.8
+  - 1.9
+  - 1.10
   - tip