initial pass of MIDI implementation that bubbles events to JS
add the ModWheel property to the MIDIManager
resolve conflicts on merge with upstream master
prune missing set before constructing nack packets;

make MAX_REASONALBE_SEQUENCE_GAP global and sentPacketHistory to use
that value as the default history size
nacked edit packets are not resent if NACKs are disabled in menu
made AudioRingBuffer frames capacity variable
switched order of args in PositionalAudioRingBuffer
Merge branch 'master' of https://github.com/highfidelity/hifi
add the PitchWheel constant to the MIDIManager class
Merge branch 'master' of https://github.com/highfidelity/hifi
fixed bug in SequenceNumberStats and its unit test; test passes now
moved and updated a comment in SequenceNumberStats
implement a new rolloff function
Merge branch 'master' of https://github.com/highfidelity/hifi into audio-rolloff
removed numFramesCapacity from being exposed everywhere
Merge branch 'master' of https://github.com/highfidelity/hifi
forgot arg in AudioRingBuffer constructor in PositionalAudioRingBUffer

changed _currentJitterBufferFrames to be -1 to indicate starved.
Merge branch 'master' of https://github.com/highfidelity/hifi
add support for getting current animation details for running avatar animations
added example script