Display error message when running invalid code in level.check
Re-fix hack.
Add bear image
Add min from a list level
Add json for bfs test
Resize and add map for bfs
Update bfs map, add border to matrix
Add posibility to move an object in the grid
Replace tabs with 4 spaces. modify import from PyQt4.
make console output read only
Add back button in level state.
Add Berry Search
Update README with project details.
Wisely position back button