1.57 -> 1.58

Re-added XP support
Fix AU validation in old not-really-supported versions of Logic
Reaper key entry improvements
HiDPI support in Cubase and Studio One on Windows
Improvements with discrete parameters drag/mousewheel
Fix crash in EQuilibrium padded zero latency analogue mode
Fix obscure bandstrips don't update issue in EQuilibrium
Background compute thread tweaks
Fix sync of bypass states
Autogain stored with AB banks
Keep band strip order stable when sorting
Fix for recalculation issues with long IRs
Fix disappearing meters