Prepare release v2.4.

NEWS

@@ -1,3 +1,13 @@
+IMAPFilter 2.4 - 6 Dec 2011
+  - Support for non-ASCII mailbox names.
+  - New environment variable to set the configuration directory.
+  - Bug fix; parsing of some server responses was broken since the previous
+    release.
+  - Bug fix; the match_field() method matched on the whole header field,
+    instead of only the header field body.
+  - Bug fix; debug file check caused printing of a misleading error message.
+  - Bug fix; typo error in a configuration man page example.
+
 IMAPFilter 2.3 - 6 Aug 2011
   - Support for appending/uploading messages to mailboxes.
   - Debug file option now takes filename argument.

src/version.h

@@ -3,7 +3,7 @@
 
 
 /* Program's version number. */
-#define VERSION		"2.3"
+#define VERSION		"2.4"
 
 /* Program's copyright. */
 #define COPYRIGHT	"Copyright (c) 2001-2011 Eleftherios Chatzimparmpas"