* comments and  todo list
* implemented phase-space edges
** wrange can be passed or extracted from histogram title under
   assumption that it was made with h3maker
** extraction from title relies on regexp (re) package
* goodcolors array
* more fit schemes and canvas cosmetics in main
** line colors/styles
** legend, color per scheme
** visible range = phase-space edge + 100 MeV
some trivial comment changes, including short TODO comment wrapping
for compatibility with Sublime-TODO plugin
added W and Q^2 ranges, populated in Setup
Fixed problem of same-name functions contaminating each other's starting parameters -- added name attribute to FitSchemeXsectInt to be appended to each function name.  Now, the fit results are independent of previous fit results.