+ Use SLkp_getkey instead of SLang_getkey so that escape sequences are
directly interpreted.
+ Major rehandling of the event code. All output drivers are now
correctly separated.
* src/graphics.c:
+ Fixed a compilation warning.
* test/event.c:
+ More human-readable event printing.
+ Small event lister, similar to X11's xev.
* src/graphics.c:
+ If possible, disable autorepeat in the X11 driver.
* src/io.c:
+ Implemented CACA_EVENT_MOUSE_RELEASE in all drivers.
+ Button number support in CACA_EVENT_MOUSE_{PRESS,RELEASE}.