update CI to test with supported Go versions (1.15, 1.16)

.github/workflows/echo.yml

@@ -25,7 +25,8 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        go: [1.12, 1.13, 1.14, 1.15]
+        # Each major Go release is supported until there are two newer major releases. https://golang.org/doc/devel/release.html#policy
+        go: [1.15, 1.16]
     name: ${{ matrix.os }} @ Go ${{ matrix.go }}
     runs-on: ${{ matrix.os }}
     steps:
@@ -59,7 +60,7 @@ jobs:
           go test -race --coverprofile=coverage.coverprofile --covermode=atomic ./...
 
       - name: Upload coverage to Codecov
-        if: success() && matrix.go == 1.15 && matrix.os == 'ubuntu-latest'
+        if: success() && matrix.go == 1.16 && matrix.os == 'ubuntu-latest'
         uses: codecov/codecov-action@v1
         with:
           token:
@@ -69,7 +70,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        go: [1.15]
+        go: [1.16]
     name: Benchmark comparison ${{ matrix.os }} @ Go ${{ matrix.go }}
     runs-on: ${{ matrix.os }}
     steps:

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## v4.2.2 - 2020-04-07
+## v4.2.2 - 2021-04-07
 
 **Fixes**
 
@@ -10,7 +10,7 @@
 * Fix panic in redirect middleware on short host name (#1813)
 * Fix timeout middleware docs (#1836)
 
-## v4.2.1 - 2020-03-08
+## v4.2.1 - 2021-03-08
 
 **Important notes**
 
@@ -32,7 +32,7 @@ A performance regression has been fixed, even bringing better performance than b
 This release was made possible by our **contributors**:
 aldas, clwluvw, lammel, Le0tk0k, maciej-jezierski, rkilingr, stffabi, withshubh
 
-## v4.2.0 - 2020-02-11
+## v4.2.0 - 2021-02-11
 
 **Important notes**
 

README.md

@@ -17,7 +17,7 @@ Therefore a Go version capable of understanding /vN suffixed imports is required
 
 - 1.9.7+
 - 1.10.3+
-- 1.14+
+- 1.15+
 
 Any of these versions will allow you to import Echo as `github.com/labstack/echo/v4` which is the recommended
 way of using Echo going forward.