Graphite 0.9.12 available

A new Graphite version has been released.
Just look at the number of bugfixes  and new features.

This is the last major update of 0.9.x branch.

Next major release will be 0.10.x, it will get megacarbon branch merged into trunk.

Another important feature I'd love to see in Graphite - it is carbon relay performance improvement.