Returns the version information about the client
See also Client control and information functions.
version- Display version number of the client (e.g.
internalVersion- Internal version number of the client (e.g.
date- Date on which the client executable was built (e.g.
"Apr 24 2009"); not necessarily the date it was released to the public (
uiVersion- Version compatibility number for UI purposes (e.g.
30100); generally, installed addons should have this number in the
Interfaceheader of their TOC files to avoid being marked as Out of Date and possibly not loaded (