pyparsing 1.0.4 released

Stable production release of the pyparsing Python module:

- performance increased 30-40%
- added positional tokens StringStart, StringEnd, LineStart, and LineEnd
- added convenience built-in for commaSeparatedList (more robust than simply using string.split(",")
- fixed setup.py typo
- added examples for HTTP server log parsing, and comma separated list

- minor API change: delimitedList does not enclose returned tokens in a Group, this is now the responsibility of the caller; delimitedList with 'combine=True' includes delimiters in returned string, good for scoped variables (a.b.c or a::b::c) and directory paths (a/b/c).