Rudimentary CANVAS port.  Not for serious use yet!
Just-about working on iOS.
Quick impl. of joined groups, plus some speedups.
Split layout and painting.
Austere keyboard-nav implementation.
Colors for histograms.
Linegraphs.
Minimal zoom impl.
Better group-joining.
Reinstate bumping.
Height management.
Labelled features.
Tracked down iOS bin-fetch failures.  Temporarily (I hope!) bypassing cache on iOS.
Pinch-zooming on iOS.
Use pre-cached colour gradients.
Resize to use available horizontal space.
Sort-of plan for 0.8.
Quick hack for in-blob style data (syntax probably need improving!)
Merge branch 'master' into canversion
Minimal implementation of hit detection.