Selling Space

--Added Surface Bases, allowing a whole new income source, tying into the surface cargo delivery systems and requiring two types of upgrades for maximum benefit

--GUI improvements. Minimisation to remove intrustive windows when they're not needed, status screen upgrades to allow easier inspection of your company's assets

--New cargo pod size and shape introduced, allowing for heavier rockets to be built far more easily

--Bugfixes for Space Stations