UnitPerks grant Promotions [snippet for mod makers 2016-10-05

This mod contains code that defines a new XML table. By adding entries to this table mod makers can have UnitUpgrades grant Promotions. This works identically for UnitPerks that are inherently part of unit upgrades and UnitPerks that are choices. If an end-user is playing with multiple mods that use this snippet it will work properly.

UnitPerks_UGP_FreePromotions: <PerkType, PromotionType>
Any unit with the PerkType will automatically be given the PromotionType.

More information at the discussion thread.