Blob Filter

[tylkahn]

This filters out all blobs except for the largest one.

[widdakay]

don't forget to ignore and remove the build folder

[c0d3rman]

@tylkahn Please use better commit names. Also, you don't need to commit every time you test; it just clutters up our history with commits that change 3 characters or that are immediately reverted. Finish writing one piece of the code, test it, fix it, test again, and THEN commit. That said, committing too often is much better than not committing often enough, so if you want to make a "work-in-progress commit" start the title with [WIP]. (This is not yet standard protocol; we will decide on a standard protocol in the offseason.)

[oshlern]

This has been implemented into the code in a slightly different way in blob_callback when defining largest_contour. (old PR)

[c0d3rman]

@oshlern If this PR is obsolete please close it.