* Delimiter mismatch now prints a warning instead of raising an exception.
* Offer style warnings for use of e.g. and i.e.
* Bypass false positive warnings for forward slashes in urls and in /rfc822.
* Put non-LaTex delimiter matching first to make -d option more reliable.
* Added more LaTex cmds from the docs.
* Blocked forward-slash warnings with delimiters-only option.
* Put help message on shorter line to fit an 80 char screen.
Raymond Hettinger