Added DEFAULT_EPSILON to IsCloseToFloat to simplify some code
Added tests for CollisionWarning
Added extra Vector2D tests
Merge branch 'master' into tests
Added tests for Utils class
Merge branch 'master' into tests
Added tests for AirspaceObject
Added tests for FlightPathGenerator
Merge branch 'master' into tests
Simplify Vector2D tests by allowing angles to be doubles
Added tests for Aircraft
Added tests for Airspace
Merge branch 'tests'