Add imaplib to appropriate lists.
diff --git a/Doc/lib.tex b/Doc/lib.tex
index a481e7f..997df9a 100644
--- a/Doc/lib.tex
+++ b/Doc/lib.tex
@@ -155,6 +155,7 @@
 \input{libhttplib}
 \input{libftplib}
 \input{libgopherlib}
+\input{libimaplib}
 \input{libnntplib}
 \input{liburlparse}
 \input{libsgmllib}