solve in do notation
/Y.
Merge branch 'master' of https://github.com/dtell/func-prog

Conflicts:
	lab3/Sudoku.hs
Merge branch 'master' of https://github.com/dtell/func-prog
Interactive main function.
/Y.
F**king merging!
Merge branch 'master' of https://github.com/dtell/func-prog
Heuristics X: sort blanks on every step.
/Y.
Merge branch 'master' of https://github.com/dtell/func-prog
Merge branch 'master' of https://github.com/dtell/func-prog