various updates
- widgets can stay in front if blender is not wrapped in qt (more stable)
- widgets can be auto discovered and added (parented) to bqt
- widgets can be enforced unique using the objectname, to avoid opening the same tool twice
- fixed various bugs
- notable bug: settings are not saved on closing blender
- after years of outdated pip packages, bqt released a new version to PyPI (for pip install)