This PR:
- Refactors the doctrine class to have a bit more structure, in
anticipation of adding more elements to Doctrine.
- Moves previously hard coded helo-specific altitudes into the Doctrine
class, aligning a bunch of altitudes ~200ft in the process.
- Refactors ingress_altitude to combat_altitude to clarify that the
altitude is applied to multiple waypoint types, not just the ingress
altitude.
5b858886c0
