Add some version info for new methods and class
diff --git a/Doc/lib/libimaplib.tex b/Doc/lib/libimaplib.tex
index 1edbff7..dba9692 100644
--- a/Doc/lib/libimaplib.tex
+++ b/Doc/lib/libimaplib.tex
@@ -68,6 +68,7 @@
\begin{classdesc}{IMAP4_stream}{command}
This is a subclass derived from \class{IMAP4} that connects
to the \code{stdin/stdout} file descriptors created by passing \var{command} to \code{os.popen2()}.
+\versionadded{2.3}
\end{classdesc}
The following utility functions are defined:
@@ -213,6 +214,7 @@
\begin{methoddesc}{login_cram_md5}{user, password}
Force use of \samp{CRAM-MD5} authentication when identifying the client to protect the password.
Will only work if the server \samp{CAPABILITY} response includes the phrase \samp{AUTH=CRAM-MD5}.
+\versionadded{2.3}
\end{methoddesc}
\begin{methoddesc}{logout}{}
@@ -245,6 +247,7 @@
\begin{methoddesc}{proxyauth}{user}
Assume authentication as \var{user}.
Allows an authorised administrator to proxy into any user's mailbox.
+\versionadded{2.3}
\end{methoddesc}
\begin{methoddesc}{read}{size}