Bump version to 0.0.13

Overview of changes:

 *  We won't prevent handlers from loading other modules

mkit.ini

 [project]
-    version     = 0.0.12
+    version     = 0.0.13
     name        = imapdomo
     pkgname     = imapdomo
     maintainer  = Alois Mahdal <netvor+imapdomo@vornet.cz>