Merge branch 'develop'
Changed version number.

I guess this is okay, since the move to PDO is something pretty huge.

A note for plugin authors:

Unless you accessed the database manually, nothing has changed for you.
The API and the database model is still the same.
PHP < 5.4 can not use $this in anonymous functions.

Should have tested that one earlier (damn).
Merge branch 'develop'
0.2 Beta 2

Fixed PHP 5.3 compatibility.

I also accidentally merged some features earlier.
They actually seem to work quite well, so I do not try to revert these
changes.
Merge branch 'master' into develop