#5 added jump drive jumps
#5 refactored jump drive jump calculation
- Jump and JumpBuilder have methods from prototype (memory optimization)
- jump calculation reordered for speed
#6 Added jumpDistance cost and rule
#6 added JumpDriveTravelCapability
#6 fixed import of jumpDistance rule
- one-time calculation of destination key in Step
Merge pull request #7 from dertseha/jumpDriveSupport

Jump drive support