Moved my RDFa/microdata python modules to github

In case you were using/downloading my python module for RDFa 1.1 or for Microdata: I have now moved away from the old CVS repository site, and moved to GitHub. The two modules are on the RDFLib/pyrdfa3 and RDFLib/pymicrodata repositories, respectively. Both of these modules are more or less final (there are still some testings happening for RDFa, but not much left) and I am just happy if others chime in in the future of these modules.

Although part of the RDFLib project on GitHub, the two modules are pretty much independent of the core RDFLib library, although they are built on top of it. I hope that, with the help of people who know the RDFLib internal structures better, both modules can become, eventually, part of the core. But this may take some time…