Update cjklib to be compatible with SQLAlchemy >=0.7

[msikma]

I'm currently working on a new project that uses Flask and cjklib. However, Flash-SQLAlchemy seems to error our when I'm using SQLAlchemy 0.6.9 (despite it stating it's compatible with 0.6 or higher). This means I've got a problem, since I need the lower version of SQLAlchemy for cjklib, and the higher version for Flask-SQLAlchemy.

It would be nice if cjklib could be updated, or if at least some information could be posted on what's currently preventing 0.7 from being usable.