Update 1.05 - Bugfix Edition

Just a few quick bug fixes, mostly problems that were introduced with the new pathfinding system. Changelog 1.05 - 24th March 2015 New/Improved Features - Retina resolutions now available for Mac. The game ran quite poorly at that resolution on my old MacBook so I'd love to get some feedback from Mac users. Bug Fixes - Characters will no longer stop for infinite breakdancing on stairs. - Characters who have walls or stairs placed on them will now teleport themselves out. - One bed per room now, no matter how big the room is. - Z Level correctly defaults to zero on load. - Visitors now spawn correctly from the refugee event and don't get locked in place. - Snail trails of higher Z levels are no longer visible. - Rush build lightning icon now fades away nicely rather than suddenly vanishing. - Residents now properly revert to tourists when they become homeless through their home being cleared or destroyed.