-- changelog
-- Author: nugget_fo_life
-- DateCreated: 10/12/2020 4:25:18 PM
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- marines now upgrade to mech infantry and go obsolete at mobile tactics
- mechanized infanrty now get the promotions (PROMOTION_AMPHIBIOUS, PROMOTION_EMBARKED_SIGHT, PROMOTION_DEFENSIVE_EMBARKATION)
- increased mech infantry cost to 400 (up from 375) to equal the cost of marines