v2.7.0

Changelog:

 + FreeCompanyInfo
 + AirshipTimers
 + SubmarineTimers
 + AirshipStatusList
 + AirshipStatus
 + AirshipExplorationResult
 + SubmarineProgressionStatus
 + SubmarineStatusList
 + SubmarineExplorationResult
 + MarketBoardPurchase
 + MarketBoardPurchaseHandler
 + DesynthResult
 ~ MarketTaxRates -> ResultDialog