don't do full build all the time

.github/workflows/build-short.yml

@@ -0,0 +1,13 @@
+name: 'Build Hub'
+
+on:
+  push:
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2.1.3
+        with:
+          go-version: 1.16.5
+      - run: go build .

.github/workflows/build.yml

@@ -2,6 +2,8 @@ name: 'Build Hub'
 
 on:
   push:
+    branches:
+      - master
 jobs:
   build:
     runs-on: ubuntu-latest

scripts/version.py

@@ -328,7 +328,7 @@ def main():
     parser.add_argument("--confirm", default=0, action="count",
                         help="without this flag, it will only print what it will do but will not actually do it")
     parser.add_argument("--start-tag", help="custom starting tag for changelog generation")
-    parser.add_argument("action", choices=['test', 'current', 'major', 'minor', 'micro'])
+    parser.add_argument("action", choices=['test', 'current', 'major', 'date', 'micro'])
     args = parser.parse_args()
 
     if args.action == "test":