[request] Added brown, gray, and orange. [request] Added undo, faster clear. [request] If you paint outside the edge you can keep painting. [new] Cursor chan

[request] Added brown, gray, and orange. [request] Added undo, faster clear. [request] If you paint outside the edge you can keep painting. [new] Cursor changes to match paint color. [fix] Images are now served as client-cacheable files instead of base64 encoded strings in the html loaded from MongoDB. (HUGE speed impact.)