trust in stilts

Globaly improved stability, reduced leaks and fixed many things.

API is quite stable with this release, meaning that what exists shouldn't change a lot from now on.
(see examples and README for more details on what's been introduced).

Luce Live Coding has been integrated also, as a light (and naive) form of live coding.
It's only a draft at the moment, but at least it allows designing interfaces while coding, which is already a good thing (see Luce Live Coding for more details on this).

Drawable components have been integrated and some animations also.