added setWindowTitle

made getWindowTitle available and moved to 'correct' spot
messed up function-args
Merge pull request #30 from Drezil/pull

added setWindowTitle/enabled getWindowTitle
Completes timer API
Export TimerCallback type, check addTimer return status, remove unecessary functions
Merge pull request #31 from jdeseno/timer-api

Completes timer API
Merge remote-tracking branch 'upstream/master'