add contributing section

Change *void to *opaque

Signed-off-by: Autumn! <autumnull@posteo.net>

Use fmt::fatalf in test

Signed-off-by: Autumn! <autumnull@posteo.net>

use types::c

Signed-off-by: Autumn! <autumnull@posteo.net>

add a couple of things

fix types

add pixel mode stuff

w -> E

load char

add README

fix string problems

reorganise repo

add more types

expand types

add COPYING

initial commit