Added message decoding section (not yet tested)
Tested decoding. Working. (but recursion hasn't been tested)
Added Hamming code.
Fixed hamming code section where equality of columns was checked
Added boundary check to fail detection if the card is not entirely within screen boundaries
Added tolerance in boundary check, as well as warning message
Merged from multiversion and removed some unnecessary imports
Merge pull request #4 from Recluse58/fec

Fec