Parse MSB and LSB from pitch bend and song position messages when using midilib gem#5

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mike-bourgeous wants to merge 3 commits intoarirusso:mainfrom

mike-bourgeous:mb-20230129-fix-midilib-pitch-bend

Commits on Jan 29, 2023

Parse MSB and LSB from pitch bend messages when using midilib gem.
mike-bourgeous
committed

Commits on Feb 5, 2023

Use both data bytes of song position messages to create MIDILib events.
mike-bourgeous
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Fix midilib spec to use two 7-bit bytes for song position pointer.
mike-bourgeous
committed