toward parallelism

diff now reads (up to the first 100 characters of files)
    previous version choked on empty strings
    currently reads until newline
    currently only 100 characters

parallel_gestalt no longer recursive
    still not parallel

queue
    new functions + lots of debugging

TODO:
    read files better
    eventually print diffs better (only once other things work)
    make parallel_gestalt actually parallel
    implement sequential myers
    implement parallel myers

    cleanup code (if there ever is a chance to)