milter manager is a milter to use multiple milters effectively.
If milter manager is introduced, milter manager administrates milters instead of MTA. The has some advantages:
A bug fix release of 1.8.1.
=== milter-core
==== Fixes
* [event-loop][glib] fix memory leaks since 1.6.6.
* [core] fix memory leak when delete header.
