* experimental support for texture changes
* fix some typos
* formatting + some improvements
* Some final touches, i think it's ready now
* moved a function to the shaderloader
* formatting
* add a void
* Blend group layers on `DrawingAlgos.blend_layers()`
* Support group layer blending on the canvas
* Allow editing of group layer properties
* Fix issues with group layer blending in canvas, and unite common code
* Group layers can now be used as clipping masks
* Make move tool preview work on child layers
* Change OffsetImage's `blend_layers()` to support group layer blending
* Support group layer blending in the canvas preview
* Fix layer blending mode, clipping mask opacity and cel opacity not being updated automatically if the layer/cel changed is not selected
* Add a pass through blending mode to layer groups
Fingers crossed that no bugs were introduced
* Fix issue with layers that belong to pass through groups not updating their textures on the canvas automatically on undo
You currently cannot move multiple cels on different layers, they still act as swapping. Eventually I'd also like to implement moving cels between different layers, but they would also have to be on the same frame. I don't think moving cels between different layers and frames at the same time is possible.
Thanks to https://godotshaders.com/shader/color-manipulator/
The shader has more options than just brightness and contrast though, but I didn't know how else to name the effect. "Adjust Brightness/Contrast" makes it immediately obvious as to what the effect is about.
Closes #1061, fixes issue where when Pixelorama's window loses focus, the dialogs disappeared, but the dialogs can no longer close when pressing outside of them.
Before this commit, when these tools were being used on large areas, the software would start being very slow due to the polyline drawing. Now it simply draws an image.
TODO:
- Optimize the lasso, pixel and polygon select tools
- Mirror the previews of ellipse selection and shape tools, for consistency with the lasso, pixel and polygon select tools
- Perhaps somehow remove Previews.gd since its work is even more limited now.
* splash ambient
* change fill to radial
* make import tag work with frame button
* hide Import tag dialog when clicking outside
* Icon shows the first frame of a tag
* formatting
Added missing strings to Translations.pot and fixed a few ones that were broken either because of missing periods, differences in capitalization or because of trailing newlines (the latter seems to get automatically trimmed in tooltips during runtime)
