Creates a gophermap with all of the yyyy-mm-dd*.txt phlog
entries sorted in reverse order underneath a header text
read from a file named "phloghead" in the same directory.
Then optionally modifies a specified line on the gophermap
in the above directory to show the name of (could also be
a link to) the latest post. Should be run in the same
directory as the phlog post text files.

With the "-wraplatest" switch specified, also wraps the
text of the latest phlog post using "fold".

Other settings are configured at the start of the script.
Current values are for my Gopher hole.