• Fix vessel.global_facing for space plane
  • Also ensure stable reference (internal) frame
• Add time_of_ascending_node and time_of_decending_node helper to orbit
• Improve docking port API:
  • Add DockingState enum
  • Get node type information
• Experimental additions:
  • Add std::rendezvous::lib for a simple orbital rendezvous maneuver
  • Add std::rendezvous::dock for simple docking (needs lots of tweaking/optimization)
• Add improved launch sequence (thanks to RobertoBiundo)
• Extend the resource transfer API to support transfer of specific resources (and specific number of units)
• Fix NPE in type checking
• Fix broken error reporting (issue #78)
• Fix invalid IL code exception (issue #79)