Plugget

- dependency upgrades are now handled correctly
- pip now is aware of packages installed outside the main folder, e.g. in addon folders

fix bug CACHE env var not being optional

**Full Changelog**: https://github.com/plugget/plugget-qt/compare/0.0.6...0.0.7

- fix breaking bug in latest unreal https://github.com/plugget/plugget-unreal-plugin/issues/14
- add tabs (all, installed, preset (WIP))

**Full Changelog**: https://github.com/plugget/plugget-qt/compare/0.0.5...0.0.6

fix bug preventing packages from being installed

fix issue where clicking uninstall, uninstalls another package
**Full Changelog**: https://github.com/plugget/plugget-qt/compare/0.0.4...0.0.5