v1.2.0 - hull refactoring

This is a mostly internal release that restructures the way ships (and similar objects) are defined, making it easier to modify and create more.

No real user visible changes should stick out, maybe we fixed or broke something minor. Do let us know if anything changes! :-)

Related new guide on Steam on how to add a new ship with the new setup: http://steamcommunity.com/sharedfiles/filedetails/?id=481833955