Hexgrid Rotation

[syntagmatic]

The orientation of the hexgrid should be configurable. See http://bl.ocks.org/jasondavies/f5922ed4d0ac1ac2161f

This makes a lot of sense. I'm going to flag this as something to implement for v1.0.

[ericreis]

Is this feature already implemented? How can I rotate the hexagons correctly? I managed to rotate them, but the centers were off.