[enhancement] Drawn content now looks sharper while running the "Liquify filter" and "Retouch filter". Previously, when I zoomed in, it was a little blurry. [bugfix] If you painted and executed "Undo" immediately after creating a canvas, the wrong "Undo" might be executed. Fixed this. [bugfix] Commands such as "Transform" could sometimes darken the color of semi-transparent pixels. Fixed this. As a result, adjusting the brightness parameter with the "Radial blur" filter now looks different than before. [bugfix] The calculation formula for the "Noise" filter was incorrect, so it has been corrected. As a result, the translucent pixels look a little different than before.