bump for update

bump for 4.22

Update UnrealEnginePython.uplugin

auto-copy scripts to packaged

- copies content/scripts in plugin and project
- copies embedded python if used

compile fixes for 4.20 fork

Merge branch 'pr/7'

merge bump

bump breaking

Merge remote-tracking branch 'refs/remotes/origin/update-4.17'

added preliminary support for level management