[yt-dev] Big performance boost on unitrefactor.

[Nathan Goldbaum]

Hi all,

If you've been using unitrefactor, updating to the latest version
should come with a big performance boost for nearly all yt operations.

More details here:
https://bitbucket.org/MatthewTurk/yt/pull-request/67/refactor-the-unit-system-to-use-sympy/diff

To update:

$ hg pull -r yt-3.0 https://bitbucket.org/MatthewTurk/yt
$ hg up
$ python setup.py develop

Be sure to save any uncommitted changes with hg shelve first.

-Nathan