Ubuntu setup instructions: libgtk3.0-cil-dev is not required
Upgrades to overcome bitrot
Sadly, bitbucket does not support Mercurial directly any more
physicssim: time limits
physicssim: Factor out code for running command on root window
physicssim: Fix crash after window open
physicssim: work-in-progress: plot to piston-window
physicssim: Plotting improvements