Merge pull request #739 from diizy/master

Removal of the "sample-exact controllers" and "anti-aliasing oscillators...
InstrumentFunctions: fix base note playback in chords

As of 6650dd356dbdd08739ad69153b0c7020e39787b9 base notes are not played
anymore when chords are enabled. Therefore create a separate NotePlayHandle
for the base note like we do for all other notes in the chord.
Fix globalautomationvalueat and coding style