General Bugfixes, but not enough bugfixes

Split_Blocks() no longer reverses Width and Height.
Compess() no longer uses map() for DCT Conversion
Added a 'hint' for myself in user input
Added comments for organization
Added a nonexistent Huffman function (it intentionally raises an error)
Added timings for each function

Unfortunately, not all is well; I now suspect my method of gathering
image data is incorrect, hence the odd DCT results.