v2.15.0-pre.6

• #842 Pot Browser: Improved usability by adding hint to "FX presets" database that ".vstpreset"-style presets are not yet supported
• #842 Pot Browser: Improved usability by detecting VST3 plug-ins scanned by very old REAPER versions and giving corresponding instructions (sometimes still shown as false positive)
• #842 Pot Browser: Improved usability by adding context column, e.g. to display the containing project of project presets
• #842 Pot Browser: Improved preview recording quality by not normalizing (closer to the original, less surprises when doing pre-play)
• #842 Pot Browser: Fixed loading of presets in "FX presets" for sub-directory JS effects on Windows and particular VST plug-ins
• #842 Pot Browser: Fixed slightly unresponsive GUI when opening Pot Browser for the first time
• #842 Pot Browser: Fixed error on Windows when trying to add project database (by not displaying file dialog)
• #842 Pot Browser: Fixed possible temporary UI inconsistency by preventing rebuilds during refresh