ref: b9f2b8c6a28c2d4744119c7254767a0f1b51ed2e
dir: widget/TODO
• figure out a way to reduce boilerplate for each widget • not sure if pulling every base widget dependency along the library is a great idea, maybe split the headers (<widget.h>, then <widget/textbox.h>, <widget/button.h>, etc)? • figure out widget-generated event handling