Layouting algorithm sometimes stumbles when layouting a grid.

[pstutz]

Maybe having some way to "kick" it is possible? Refreshing and hoping for a better outcome usually works but is not very satisfying.

[cshapeshifter]

Re-enabled vertex dragging on click. It's close to impossible to implement dragging only when holding Ctrl or similar because of d3's internal handling of these functions. Simply enabling the dragging by default is better. It doesn't fire unless really doing a "dragging" motion. Simple clicks register normally to expose vertex detatils.