a quick patch while i'm on vacation! (mac build will have to wait 'till next week)

sproots v.1.0.2b patch

- added the 'Q' and 'Z' to camera panning controls so it also works with AZERTY keyboards
- you can now also scroll through possible action with TAB in case using the scroll wheel is unpreferable
- fixed a crash when loading a game where a sproot had already died
- fixed a crash when you let a sproot eat something from out of their inventory and then try dropping the non-existent item afterwards