Include gochan-installer executable in release archives

Fix gochan-migrate not running if DBprefix is empty

Improve dice roll parsing

Bump version to 4.0.2 for hotfix release

Resolves issue #112

Update post/thread/file deletion query scan parameters

Update versions for v4 release

Update version number for release

Fix plugin building bug in build.py

Update configuration documentation with GeoIP and fingerprinting

Remove "Verbosity" config field and rename "DebugMode" to "Verbose" f…

…or enabling command line output on errors