KerBalloons

-Added 36 new balloons for Eve, Duna & Laythe

-Added KerBalloons part category in VAB/SPH

-Kerbals can now repack deflated (but not burst) balloons

-All new models/textures for all KerBalloons parts

-Probe cores removed from balloons

-Fixed bug where moving horizontally could cause the balloon to lose lift

-Fixed bug where balloons that had been inflated didn't load properly after quickloading/loading flight after returning to space centre

-Various bugs fixed in lift calculations

-Max payload is now stated in the part info as the max payload at max pressure. eg. 'Max Payload (Kerbin): 10t (at 105kPa)'

-Ships including parts with older versions of KerBalloons are not compatible with KerBalloons v0.4.0