fix recursion for -t to work on both python 2 and 3

fix minor shebang cosmetics

cleanup version numbering and packaging

update so code works with py2 or py3; update copyright notices

force use of python2 to support code anachronisms

Added automatic detection of terminal width on *NIX systems.

Added -R to command list in help summary.

Updated copyright.

Added -D option to suppress output of dotfiles.

Changed shell invocation to use /usr/bin/env.

Changed display of sort by extension in several ways: ...

Separator character now appears at the beginning of the extension.
'dot files' (with a leading separator character) are now shown as
having no extension.
Extensions are now enclosed in parens instead of curly braces for
better readability.

Added -e option to Usage command line help display.

Fixed a bug introduced in last version.

Added option to suppress sorting by extension.

Embedded version number differently in help screen.

Changed definition of TRUE/FALSE booleans to be correct python objects.

Switched from old to new form of string rfind()

End directory names with "/" instead of ":" (which never made sense).

Fixed problem with directories displaying as files in certain cases.

Added version information to help display.

Changed usage display to be table (tuple) driven for ease of maintenance

Changed "Recur" to "Recurse" in the help display.

Fixed formatting problem so that -t and -Rdf actually work the same as documented.

Added -d, -f, and -t Options

Replaced individual column calculations w/ divmod() ...

Based version string on RCS information

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