v1.0.20.5: Patch exception parsing null extraartists, multiple rewind…

…-hidden 0 tracks crash & false alt-subtrack notation parsing mitigation

v1.0.20.4: Fix mismatched master/releases tree crash & disabled auto-…

…load default artist action

v1.0.20.3: Fix artwork options changing 'skip artwork' value

v1.0.20.2: Fix artwork manager crash

v1.0.20.1: Clear cached VA_MA releases

v1.0.19.2: Fix new tag mapping entry GUIDS, fix crash in 'Back' Previ…

…ew context menu option