11bit

Edge threshold has been reduced downto 80 based on the formula shown in the undergrad project manual. EdgeMax + EdgePerp/8 >= 80.

Additionally test cases for each of the directions through the use of Filter.vhd have been added (at the request of James). To run these tests, change the size dimensions from 256 to 3 in the Filter.vhd file. Additionally change the reference of the test1.pgm (or whatever it is currently) to the name of the test and change the output.

Also everything is 11-bit cause screw it why not.

Oh another thing, after talking to James, we should change our files a bit later, instead of entering in a header for the input file. It should instead take in the exact test mages and we can then add a header in after the fact to our outputs in the form:
P2
256 256
255