Changelist SPE 1.5.4

[ArjunAnthroQA]

- Guest Mode added.
- User can change image resolution when saving.
- More options for Rotate, including Flip Image.
- Reset buttons added to Gallery.
- Node menus improved in Create Effect.
- Improvements to speed and performance of Selection Brushes.
- Improved performance for sliders when editing a selection .
- Speed improvements to color matching.
- Local effects are labelled in gallery
- Removed artifacts occurring on some Gallery effects.
- Dehaze slider added to Brightness, contrast, hue etc.
- Improvements when using denoiser nodes.
- Various bug fixes & tweaks