Adjust dependencies, autoloading and test bootstrap. Bump to 0.6 alpha

Change-Id: Ic89aaf9b4008dff62e16b5e62b1c2835b614a798
Remove last reference to DataValueFactory

Change-Id: Ic486a5d9b6c31a7a30c7f00d2ec7f0b538cf7d37
Tweak composer.json and clean up entry point

Change-Id: Ic7301fb99440ba8aaf96d3a9643a6db72bdeac15
Extend credits section and update links

Change-Id: I1a7dd1e75f3b48143aca3d8d629283307f20e2db
Merge pull request #1 from wmde/06

Make use of the new DataValues components