Project-explorer

Changelog:
- Fixed builds not including theme file.

Changelog:
- Moved to qtpy to allow use of arbitrary Qt bindings.
- Recommend using PyQt5 as numerous file system bugs are resolved by Qt5 and Pyside2 is not yet pip installable.
- Added keyboard shortcuts to open folders in new roots.
- Made it so that typing with a tree view in focus will navigate the file system.
- More powerful configuration options using regex and more flexible filtering options.
- Basic SCSS support allows for color palate variables in theme file.
- Now filters out windows junctions as they usually aren't visible and don't play nice with Qt's file system model.
- Added menu item for setup.py files to build wheels.
- New thinner theme.
- Made easier to install and run.

Changelog:
- Changed path edit to use forward slashes.
- Refactored path completion logic, resolving numerous small bugs.
- Paths replacing {path} in the open with settings are now double quoted.
- Fixed issue where trashing items of the same name at the same time would result in an error, or one of the items overwriting the other.
- Item selection is now cleared when an item in the tree view is collapsed. This prevents accidentally deleting selections in a collapsed branch.

Changelog:
- Custom context menu improvements.
- Added ability to override the system's open with settings and run custom commands instead.
- Fixed issues where view and file system could become de-synced (especially when deleting files).

Changelog:
- Fixed flashing cmd windows when executing context menu actions.

Changelog:
- Fixed bug where context menus weren't disabling invalid options.