Vfxwindow

- New `Application` class for testing current application name, version, batch mode, etc
- Fix generic `deferred` method not passing in arguments
- [Maya] Replaced `pymel` with `maya.cmds`
- [Maya] Fixed error loading dialog windows
- [Maya] Fixed bug where windows wouldn't dock via code
- [Nuke] Fixed error loading standalone and terminal windows
- [Nuke] Show traceback if error occurs during callback
- [Blender] Add `deferred` method

- Added Linux support
- Fixed Unreal Engine to support 5.x
- Added CryEngine support
- Minor fixes for Maya, Houdini, Blackmagic Fusion and Substance Painter

- Python 3 fixes
- Substance Designer+Painter docked windows
- Nuke terminal support

- Correctly loads the Blender window if using Blender 3
- Automatically load the latest version of a palette if no version is given
- Fixed instanced windows from preventing the parent window setting a palette

- Fixed docked Nuke windows not emitting the `windowReady` signal.
- Ignore Maya error if callback node can't be converted to an `MNodeMessage` compatible node.

- Disable Nuke batch mode check as it wasn't accurate
- Correctly set size of dialog windows
- Fix error when calling `about()` with no `WindowName` attribute
- Fix issue with `about()` not working correctly with new style signals
- Fix error if loading docked Maya window from another docked Maya window
- Avoid overriding the palette of a child window if launched from `StandaloneWindow`
- Fix bug if using `PyInstaller`