New movment mode!

Hey everyone, it has been a while since last update but I present you quite significant one. 

Change to moment mode i decided to remove point and click approach and give more freedom to the player to move as they wish. This is also first version with refreshed graphics so that is another reason to check it out :)

I also added fresh Linux build of the game because last one was of version 0.4.6 so it was a while ago.

version 0.5.3 changes:
- Changed movement mode, from click->pathfind to WSAD - Changed terrain graphics
- Updated icon graphics
- Added new cursors for different actions
- Added indicators for NPCs if you can talk to them.
- Fixed bug when you could add 0 coal to furnace