resolve issue #232 (creatures building up in player location). Ensure fleeing creatures temporarily avoid player location if possible and don't return (related to #232).
Fix baseAffinity bug for "willFollow".
Will also now follow if affinity is high - offers a means of overriding destination.
move "getMatchingKey" to artefact
avoid potential (but very unlikely) unlimited loop on flee
issue #178 improve mission failure handling on timeouts and failattributes.
Fix mission count on loading a saved game.
Add another cheatcode in for testing (list missions remaining with +missions)