Changes

For the next release I'm thinking about going down the route suggested by Mike Shaver during our chat when he visited our class to give a lecture, and that is to implement the solution as an extension. Doing it this way will give me more freedom, but at the same time moving passwords onto SQLite is going to become a default sooner rather than later across the Mozilla world so having it implemented as an optional solution does not really make sense. In any case, for v0.2 my goal is to have the current solution re-packaged as an extension, and then for v0.3 and beyond to go into cleaning up the code and optimization.