Github actions: make release action manual

Author: epilys

.github/workflows/main.yaml

@@ -4,6 +4,10 @@ env:
   RUST_BACKTRACE: 1
 
 on:
+  workflow_dispatch:
+    inputs:
+      release:
+          description: 'Make release'
   push:
     branches:
       - 'master'
@@ -161,7 +165,7 @@ jobs:
 #          restore-keys: |
 #            ${{ matrix.os }}-${{ matrix.rust }}-${{ hashFiles('Cargo.lock') }}
       - name: Release to crates.io
-        if: needs.setup.outputs.DOING_RELEASE == '1' && matrix.os == 'ubuntu-latest'
+        if: (needs.setup.outputs.DOING_RELEASE == '1' || github.event.inputs.release != '') && matrix.os == 'ubuntu-latest'
         run: |
           cargo publish --token ${{ secrets.CRATES_IO_TOKEN }}
 
@@ -224,7 +228,7 @@ jobs:
   release:
     needs: [setup, test] #, regression_tests]
     runs-on: ubuntu-latest
-    if: needs.setup.outputs.DOING_RELEASE == '1'
+    if: needs.setup.outputs.DOING_RELEASE == '1' || github.event.inputs.release != ''
     steps:
       - name: Download the Artifacts
         uses: actions/download-artifact@v2