copy version.txt into dist build

+ install wsgi server manually on scripts

.github/workflows/release.yml

@@ -77,11 +77,11 @@ jobs:
       - name: Activate virtualenv (linux)
         if: matrix.os == 'ubuntu-20.04'
         run: |
-          source .venv/bin/activate
+          source .venv/bin/activate && pip install bjoern
       - name: Activate virtualenv (windows)
         if: matrix.os == 'windows-2019'
         run: |
-          .venv\Scripts\Activate
+          .venv\Scripts\Activate && pip install waitress
       - name: Install dependencies
         run: |
           pip install -r requirements.txt