sprite collection editor v2.0.exe

Like was done for the autotile translator, I spent some time updating the sprite collection editor:

• I added duplication buttons for animations and properties, which had been a feature requested on the discord.
• Save files for the sprite collection editor now contain the image data, rather than just the path name. However, this also means that old save files are not compatible with the sprite collection editor 2.0. I will be keeping the legacy version available for up to the new year.
• A translate button was added, to translate singular rpgmaker-style character spritesheets into sprite collections in just a few clicks. This feature will automatically generate directional stand, walk and run animations based on the original spritesheet. 

Up next: Bug-squashing. After that, I will return to adding more features to the pink engine, including the much anticipated parallel processes.