Geometry fix.
Merge branch 'airport-problem' into stage-3-solution
Merge branch 'stage-3-solution' into stage-4-solution
Merge branch 'stage-4-solution' into stage-5-solution
Adding runway graphic.
Merge branch 'airport-problem' into stage-3-solution
Merge branch 'stage-3-solution' into stage-4-solution
Merge branch 'stage-4-solution' into stage-5-solution
Updating codeclub.py and adding alpha channel to runway.
Adding get_direction.
Merge branch 'airport-problem' into stage-3-solution
Merge branch 'stage-3-solution' into stage-4-solution
Merge branch 'stage-4-solution' into stage-5-solution