unify Task interface, improve unittests, final release for 2.0
release 1.9.9
added documentation
release 2.0.0
small improvements
release 2.0.1
process timeout now executes callbacks
release 2.0.2
improve docs
fix docs
thread better decoupling, task cancel more effective, prepare for thread.pool
test fixes
release 2.0.3
process ready for pool
release 2.0.4
Added @synchronized(lock) decorator
improved thread pool and added unittests
unittests for thread pool coverage -> 97%
updated README
release 2.1.0