v6.58rc3 - May 17 2022
* Includes feature branch: improved render loudness charts
* Includes feature branch: render individual tracks via master track using render matrix
+ Performance: reduce redraws when moving mouse over envelope lanes
+ Razor edits: add undo point when clearing edits
+ Razor edits: fix potential incorrect drawing when very zoomed into long razor edits
+ Razor edits: include in undo point when clicking items
+ Razor edits: prevent selections from being lost when loading a project with missing media
