v5.976 - May 3 2019
+ Automation items: copying AIs copies extension state [p=2128744]
+ Envelopes: fix default bezier tension when adding automation item to otherwise empty envelope [t=220432]
+ MIDI: fix diamonds/triangles peak view for very low numbered MIDI notes [t=220319]
+ Media explorer: improve performance with large databases [t=220351]
+ Mousewheel: add undo points when changing track volume/pan/width via mousewheel [t=190260]
+ Project bay: always display position/length in time for time-based media, beats for beat-based media
+ ReaScript: SetEnvelopeStateChunk() updates envelope panels [t=220308]
+ Stability: fix potential crash when renaming tracks and SWS auto-layout is used [t=220400]
+ Stability: fix project bay automation item-related crash [p=2128917]
+ Stretch markers: permit adding markers on audioless video items [t=220352]
+ Transport: improve jump to marker/region menu [t=220350]