Add Elixir 1.10 to matrix

.github/workflows/ci.yml

@@ -12,10 +12,10 @@ jobs:
     strategy:
       matrix:
         otp: [21.x]
-        elixir: [1.7.x, 1.8.x, 1.9.x]
+        elixir: [1.7.x, 1.8.x, 1.9.x, 1.10.x]
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - uses: actions/setup-elixir@v1.0.0
       with:
         otp-version: ${{matrix.otp}}
@@ -24,7 +24,7 @@ jobs:
       id: cache
       with:
         path: deps
-        key: ${{ runner.os }}-mix-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
+        key: ${{ runner.os }}-${{ matrix.elixir }}-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
         restore-keys: |
           ${{ runner.os }}-mix-
 
@@ -37,19 +37,19 @@ jobs:
 
   formatter:
     runs-on: ubuntu-latest
-    name: Formatter (1.9.x/21.x)
+    name: Formatter (1.10.x/21.x)
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - uses: actions/setup-elixir@v1.0.0
       with:
         otp-version: 21.x
-        elixir-version: 1.9.x
+        elixir-version: 1.10.x
     - uses: actions/cache@v1
       id: cache
       with:
         path: deps
-        key: ${{ runner.os }}-mix-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
+        key: ${{ runner.os }}-${{ matrix.elixir }}-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
         restore-keys: |
           ${{ runner.os }}-mix-
 
@@ -59,4 +59,3 @@ jobs:
 
     - name: Run Formatter
       run: mix format --check-formatted
-