Bump version

Overview of changes:

 *  Added locking mechanism

    We have to assume that filtering can take long, so if cron is used
    to launch imapdomo and gap is too small, imapdomo instances could
    run over each other, increasing the load even more.

    Now imapdomo drops a lockfile by default, and silently gives up if
    lockfile exists.  This can be disabled by command line switch.

 *  Removed dead code

mkit.ini

 [project]
-    version     = 0.0.7
+    version     = 0.0.8
     name        = imapdomo
     pkgname     = imapdomo
     maintainer  = Alois Mahdal <netvor+imapdomo@vornet.cz>