New features! * In geo mode, switch between viewing xy (default), yz, and xz   coordinates by pressing '1', '2', '3' respectively. * In geo mode, right click to center view at where you clicked. * In geo mode, press 'z' to zoom out and 'Z' to zoom in.  Use with   right clicking for zooming fun. * After selecting nodes with the middle button, press 'g' to   force vis to try to update those nodes immediately.
New features!
* In geo mode, switch between viewing xy (default), yz, and xz
  coordinates by pressing '1', '2', '3' respectively.
* In geo mode, right click to center view at where you clicked.
* In geo mode, press 'z' to zoom out and 'Z' to zoom in.  Use with
  right clicking for zooming fun.
* After selecting nodes with the middle button, press 'g' to
  force vis to try to update those nodes immediately.

Tiny code cleanup, centralizing 'update' calls to a single function.

weidezhang/dht,weidezhang/dht,sit/dht,sit/dht,sit/dht,weidezhang/dht,weidezhang/dht,sit/dht,weidezhang/dht,sit/dht