New Years Update: Layer blend modes and a new toolbar

Happy New Year! This update adds blend modes to layers, including multiply, linear burn, darken, lighten, color dodge and more. A new toolbar has been added to the top of the canvas window giving you quick one click access to Undo, Rotate, Flip, Cut, Copy, Paste, Grid and Zoom. Also included in the update is a list of bug fixes detailed below.

Added:

1. Layer blend modes including multiply, linear burn, darken, lighten and more.
2. Toolbar with Undo, Rotate, Flip, Cut, Copy, Paste, Grid and Zoom buttons.

Fixed:

1. Drawing a shape with the option to fill the shape crashes the application.
2. Drawing with a lower alpha level on a blank canvas led to incorrect blending.
3. Pressing tab whilst in dialog window causes main UI to expand or collapse.
4. Erase tool required mouse move before erasing pixel under the click point.
5. Erase tool strength setting was being ignored.
6. Floating pixel selection is moved by arrow keys if arrow keys are pressed in edit control.
7. Rotate image clockwise messes up the image.
8. Rotate image anti-clockwise messes up the image.
9. If you close the application with unsaved changes and the animation playing, the app crashes.
10. Exporting to folder that doesn't exist and it fails, no error msg.
11. Sometimes focus is lost and shift, alt, ctrl no longer works.
12. Undo after color replace all doesn't work.
13. Crop was only working on a selection rect, if you select Crop now without a selection rect, any pixels outside of the canvas bounds are removed.
14. Undo only restores pixel data in the canvas area, pixels outside of the canvas remain changed.
15. Flood fill doesn't work properly with content that exceeds the canvas size.
16. Trim doesn't work properly with content that exceeds the canvas size.
17. Color picker doesn't get the pixel alpha level, only the R, G and B value.
18. Merging a layer into the layer below it with a frame offset causes the top layer to move to meet the layer below it.
19. Fixed some photoshop PSD import bugs.
20. Made the grid input fields larger to support expressions better.