rtf-support version 1.4

Hi everyone, I've got a new version of my rtf-support code, with a few bug-fixes and other enhancements, including: * Corrected placement of brace characters (fixes interoperability issues). * Fixed interaction with read-only extents. * Reduced amount of stylesheet clutter (now only faces that are actually being used come out in the generated RTF). * Improved speed of RTF generation. I'd like to get this released as a package, but I thought I'd send it to the list first as I know there are a few people out there using the previous version who'll enjoy testing it whilst I get it into the right form for inclusion as a package. Kind regards, Alastair.