removed inference function

Defined function to test whether a value is within the domain of a
variable. Redefined order_domain_values using this function. Finished
recursive backtrack function
tested and fixed order_domain_values
added consistent code
finished and fixed backtrack

solves board from test1.txt
greg changed something

idk what
Minor bugfix

Allows backtracking
Finished debugging backtracking

It was a tab.
Added extra example files
Tested on 16x16

Worked, but took about 15 minutes to complete.
Started working on forward checking

Implemented various functions
Continued Forward Checking

Fixed is_assigned and initialize_domains so that given variables don't
have domains and assigned variables keep their domains from the point
of assignment.
Implemented reverse_forward
Finished writing and debugging forward checking
added mrv
formatting
finished mrv mcv and lcv
Bad changes
Merge branch 'no_inference' of https://github.com/jdbruce1/EECS_348 into no_inference

Conflicts:
	EECS_348_Sudoku.py
Put old things in a folder
added assignment 3