add node 14

Author: devsnek

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
       matrix:
         # TODO: add windows
         os: [ubuntu-latest, macos-latest, windows-latest]
-        node: [10, 12, 13]
+        node: [10, 12, 13, 14]
     runs-on: ${{ matrix.os }}
     steps:
       # https://github.com/actions/checkout/issues/135