AnnoyRP is yet another addon to provide chatter. It is aimed primarily at roleplaying usage; you can set up selections of funny or appropriate things to say on particular circumstances, such as spell casting or ordering your pet around. It is fairly friendly, and accepts drag and drop of spells for nearly automatic configuration.
This is probably reasonably called a beta release. A few useful convenience features have been added, and the error checking seems to be more robust. A few new events have been added, and there's some in-game help.
The enclosed ReadMe file gives more information; as always, unpack into Interface/AddOns. History in ChangeLog.txt.
Feedback is solicited, especially informative bug reports.
WARNING: If you have data saved in 0.20 or earlier, you should backup your SavedVariables file before installing 0.21 or later. It has worked fine in testing, but it does need to convert the old data format to the new data format. Make a backup just in case.
0.27 adds 2.3 compatibility (just a TOC upgrade) and /orcish to speak orcish, etc. 0.28 fixes the fatal typo in 0.27.