Create make-numbers-from-dnom.py

# This script takes a set of designed denominator glyphs with names ending 
# in ".dnom" and creates new shifted glyphs referencing the originals as
# composites, with names ending ".numr", ".subs" and ".sups"

# NOTES:
# 1) Requires RoboFab to be installed.
# 2) Script uses constants for vertical offsets of numerator, denominator 
#    and subscript glyphs; you will have to adjust these for your values.
# 3) Script will use the italic angle in the font to decide on the horizontal 
#    shift required for any given vertical shift.