*fixing version handling in Makefile.am (proper lib version!)
*documentation
*implementing stub routines
*examining if there are still deadlocks / race conditions
DONE:
*protecting "getParam" and "setParam", "INIT" and "CLOSE" by an mutex
*separate RO and RW parameters
*adding some important parameters (e.g. ABSX, ABSY)
*renaming 'None' in 'Button' enum to 'NoButton'