backup/.gitignore
  - have git ignore the backup files
splitmath.py
  - pep8 formatting
  - don't discard antialiasing (there was no clear reason any more)
  - made loadable/usable as python module
mathtex.py
  - call splitmath.split_image() Python function rather than start
    splitmath via shell
Merge pull request #2 from arild-haugstad/master

splitmath cleanup