added timeLeftUntil*, updated javadoc comments
added getTimerIds
changed function names to be more intuitive
updated to reflect 2nd version
changed to getTimeLeftUntilNextEvent so that function covers remaining time to both tick and finish event
added toString()
added getters for tickInterval and timerDuration
updated example to cover newly added functions
updated example to cover newly added functions
updated some comments
updated README
add release versions of updated library