* peru.org: Try setting up emacs to use ipython, to no avail.
* peru.org: Attempt to add support for tufte class. Not working. Use sidenotes instead.
* peru.org: Remove tufte-specific functions
* peru.org: Add support for caesar_book class and add sidenotes to default latex packages
* peru.org: add beamer-handout latex export class that sets geometry to my liking
* peru.org: added structure templates for marginfigure and margintable
* peru.org:

  - Add htlatex support for converting tikz to html (currently not working though)
  - make python3 the default