Fix for exists() failing, update for passing with django 1.5. Remove 1.1 support.
Remove whitespace
Get rid of 1.1 other stuff
add johnny module __version__ number  (PEP 396)
Adds FailSilentlyMemcachedCache
Merge pull request #24 from pyriku/fail-silently-memcached-backend

Adds FailSilentlyMemcachedCache
Fix breakage in django 1.6

sid happens to be None in one or more cases, just test it's not None before returning it.
Merge pull request #25 from artscoop/master

Fix transaction breakage in Django 1.6
Merge pull request #22 from dlam26/master

add johnny module __version__ number
Fixed bug in LocalStoreClearMiddleware.process_exception

The 'process_exception' middleware method should not re-rsie exception ever!
Merge pull request #33 from Ashald/patch-1

Fixed bug in LocalStoreClearMiddleware.process_exception
Fixed bug that caused KeyError in johnny.transaction.TransactionManager._commit_savepoint - issue #30 on Github (#69 on Bitbucket)

This patch is fixing cause of the problem, not hiding it as pull requests #26 and #30.

To reproduce cause of the problem you should:
1) Enable QueryCacheMiddleware
2) Work in unmanaged transaction state (it means autocommit mode, i.e. without 'django.middleware.transaction.TransactionMiddleware' and not within 'transaction.enter_transaction_management()' block)
3) Create a savepoint and then try to save some object (it is done by 'django.db.models.query.QuerySet#get_or_create' or by 'django.contrib.sessions.backends.db.SessionStore#save')

The essence of the problem is the fact that Django ORM widely uses a 'django/db/transaction.py#commit_unless_managed' (which is unpatched by Johny Cache) function instead of 'django/db/transaction.py#commit_unless_managed' (which is patched by Johny Cache). So, when we working in unmanaged transaction state Johny Cache will still register savepoints upon creation but will be unable to handle commits and rollbacks that wast performed by 'unless_managed' functions. Since Django is using dumb algorithm for savepoint names generation (they reuse same names within thread once they were commited) it will lead to a situation when Johny Cache will register several savepoints with same name within one transaction and fail when it will try to commit or rollback them.

Proposed solution adds patching to 'django/db/transaction.py#commit_unless_managed' and 'django/db/transaction.py#rollback_unless_managed' functions in the same way as it was done for 'django/db/transaction.py#commit' and 'django/db/transaction.py#rollback' functions with one difference - additional check whether current transaction is unmanaged.
Little update in 'is transaction managed' checking logic
Comment typo fix
Merge pull request #34 from Ashald/patch-2

Fixed bug that caused KeyError in _commit_all_savepoints
Fixes for Django 1.6