anti stupid user feature: check for lack of entry in options

Progress bar for animated gif save? (difficult to get this from convert?)

Animations, save as mpeg (tricky without other software)
Improve plotting of convective regions (c.f. Langer's output)

Run grids

Load multiple model sets (turn runname to an array)

prevent ISB=1 with KTW=2

click in HRD to select model (ARGH)

shrink load/save buttons
hourglass on load/save

fix load model for star 1 when star 2 is empty (oops)
fix "latest", it doesn't always work

in the hrd labels run off the edge of the plot when zooming in, fix this

restart fails because it does not set @INC after it has been set manually (on windoze