moved pretty_plot out of sandbox and into plot folder
changes to pretty plot
another pretty plot update with borders being set
Started Hash Line graphic program
Finished hash calculation in hash_line
Fixed bug in line_int_line
Finished first cut at hash_line
Separated hash_line drawing from calculation
Finished options function
Finished polygon version
Converted all functions to stand-alone
Updated options processing for hash functions
Error in the options processing
Improved defaults for several hash functions
in the process of updating pretty_plot
pretty plot doing tight bounding
minor update to pretty plot
pretty plot updates to work with tex on linux systems. Almost done.
Merged conflict in pretty_plot help file
almost done with pp