Changes since tag v80200.1

commit fd7cf8d938d1383b4bc0356c8434c359c9b401fd
Author: Parnic <parnic@parnic.com>
Date:   Sun Aug 11 15:34:23 2019 -0500

    More Classic updates
    
    Changed wow_classic checks to use the WOW_PROJECT_CLASSIC constant instead of interface version checks.
    Fixed GetQuestDifficultyColor errors in Classic.
    Fixed user-reported UnitHasVehicleUI errors in Combos tag.

