New option to place color palette items at the end of the "New"
dialog, rather than at the beginning. Useful for when users
would want to pick from a set of Starters and/or Templates,
e.g., in a school or museum environment.
Available via command-line option "--newcolorslast", and
config file setting "newcolorslast=yes". (And anti-option to
override config file settings, "--newcolorsfirst" and "...=no",
which represents the original behavior, which continues to be
the default).
Suggested by Bernard Verhaeghe.
Documenting Mark Kim's recent changes:
* Less CPU-hungry progress bar (during Stamp loading)
* Verbose debugging options
* (Also, mentioned debugging _at all_, in INSTALL.txt)
Bumping version to 0.9.23a, to match the test build he's working
on for macOS.
