refactoring and fix for join samples bug
bug fix - waveform item flags set incorrectly after join, split, and insert
snap combo box updated after import and open project
bug fix - start key set incorrectly in sfz export
bug fix - playhead speed ignores whether time stretch checkbox is checked
bug fix - looping does not remain set after some operations
stop playhead before tearing down sampler
include time sig + no. of bars/beats in save file
update snap slice point to loop marker code
default to alsa if jack not available
remove split command
update help doc
update version no.
update todo