wip/Aseprite Source NetBSD

Aseprite is a program to create animated sprites. Its main features are:

* Sprites are composed by layers and frames (as separated concepts). * Supported color modes: RGBA, Indexed (palettes up to 256 colors), and Grayscale. * Load/save sequence of PNG files and GIF animations (and FLC, FLI, JPG, BMP, PCX, TGA). * Export/import animations to/from Sprite Sheets. * Tiled drawing mode, useful to draw patterns and textures. * Undo/Redo for every operation.