begin_work, rollback, and commit now properly lock the database
-rw-r--r-- Build.PL
-rw-r--r-- Changes
-rw-r--r-- MANIFEST
-rw-r--r-- MANIFEST.SKIP
-rw-r--r-- README
drwxr-xr-x articles
drwxr-xr-x lib
drwxr-xr-x t
drwxr-xr-x t_attic
drwxr-xr-x utils