SimpleAdjustableFairings v1.8.0 for KSP 1.8.1

• Add enabled attribute to model data (default true)
  • Used for part switching to disable a particular piece of the fairing (since eliminating the node wouldn't do anything)
• Send OnPartModelChanged event so other modules can respond to changes in the model
• Listen for ModuleDataChanged to rebuild fairing
  • Use requestNotifyFARToRevoxelize and requestRecalculateDragCubes attributes of event details if present rather than recalculating aero properties ourself, that ensures it's only done once per cycle
• Use better method of recalculating drag cubes
• Send/listen for DragCubesWereRecalculated and FarWasNotifiedToRevoxelize to make sure actions are only done once per cycle