Update tested go versions (#23)

Author: dysosmus

.github/workflows/test.yml

@@ -11,12 +11,12 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [ '^1.0','~1.16', '~1.15', '~1.14' ]
+        go: [ '^1.0','^1.17.0', '^1.16.0 ']
     name: Go ${{ matrix.go }} test
     steps:
       - uses: actions/checkout@v2
       - name: Setup go
         uses: actions/setup-go@v1
         with:
           go-version: ${{ matrix.go }}
-      - run: go version && go test ./...
+      - run: go version && go test ./...