Fix double delete by ignoring the problem.
Merge pull request #26 from zachsnow/dev/double-delete

Fix double delete by ignoring the problem.
Never cache the South migrations table.

This can be extremely confusing during local development, where the
developer may recreate their database but johnny-cache still has stale
copies of the migrations.

Fixes https://github.com/jmoiron/johnny-cache/issues/47 .
Merge pull request #49 from Wilfred/dont_cache_south_table

Never cache the South migrations table.
[Python 3] iter[keys|values|items] -> [keys|values|items]
[Python 3] print statements -> functions
[Python 3] Removes unicode 'u' for Python 3.2
Use 'is None' instead of '== None'.
Removes unused imports.
[Travis CI] Adds continuous integration, first for django 1.4 only.
[Travis CI] Adds memcached to the services & removes Python<2.6
[Travis CI] Tries to add Django 1.3
Adds a fallback for django < 1.4.2
Adds continuous integration badges.
[Travis CI] Tries to add Django 1.2
[Travis CI] Tries to add Django 1.1
[Travis CI] Removes Django 1.1 & tries to add Django 1.5
[Travis CI] Tries to add Python 3.2 & 3.3
[Travis CI] Installs python3-memcached for Python 3.
[Travis CI] Fixes syntax.