WIP combine windows / unix tests

Author: jrushlow

.github/workflows/stable-tests.yml

@@ -0,0 +1,40 @@
+name: Stable Tests
+on:
+    push:
+    pull_request:
+    schedule:
+        -   cron: '0 */12 * * *'
+
+jobs:
+    locked:
+        name: Locked Dependencies
+        runs-on: ${{ matrix.os }}
+
+        strategy:
+            fail-fast: false
+            matrix:
+                os: [ubuntu-latest, windows-2019]
+                node-versions: [ '10', '12', '14' ]
+
+        steps:
+            -   name: Checkout
+                uses: actions/[email protected]
+
+            -   name: Node ${{matrix.node-versions}}
+                uses: actions/setup-node@v2
+                with:
+                    node-version: ${{matrix.node-versions}}
+
+            -   name: Install Yarn Dependencies
+                run: yarn install
+                if: matrix.node-versions != 10
+
+            -   name: Install Yarn Dependencies Ignore Engines (Node 10)
+                run: yarn install --ignore-engines
+                if: matrix.node-versions == 10
+
+            -   name: Show Installed Versions
+                run: yarn list --depth=0
+
+            -   name: Run Tests
+                run: yarn test