removed cache and changed to only use ubuntu-latest

.github/workflows/release.yml

@@ -10,7 +10,7 @@ name: Release
 jobs:
   build:
     name: Upload Release Asset
-    runs-on: ubuntu-16.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout code
         uses: actions/checkout@v2

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ["3.6", "3.7", "3.8", "3.9"]
-        os: [ubuntu-20.04, ubuntu-18.04, ubuntu-16.04]
+        os: [ubuntu-latest]
 
     steps:
       - uses: actions/checkout@v2
@@ -23,26 +23,10 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Get pip cache dir
-        id: pip-cache
-        run: |
-          echo "::set-output name=dir::$(pip cache dir)"
-
-      - name: Cache
-        uses: actions/cache@v2
-        with:
-          path: ${{ steps.pip-cache.outputs.dir }}
-          key:
-            ${{ matrix.os }}-${{ matrix.python-version }}-${{ hashFiles('requirements-dev.txt') }}
-          restore-keys: |
-            ${{ matrix.os }}-${{ matrix.python-version }}-
-
       - name: Install dependencies
         run: |
           python -m pip install -U pip
-          python -m pip install -U wheel
-          python -m pip install -r requirements.txt
-          python -m pip install -r requirements-dev.txt
+          python -m pip install -e .
 
       - name: Test
         shell: bash