Overview of changes:
* Removed restriction to four valid actions
User can now define as many actions as they want by simply adding
handlers for them.
* Improved usage messages
* Added meaningful error messages
* Added arguments to show version
* Added 'last' branch to keep latest version
* Fixed and cleaned up packaging info
* Updated for Shellfu v0.10.*
* Codebase maintenance
Fix dependencies, use spaces instead of tabs in .spec file, rename
`imapdomo.spec` to `template.spec`, rename `imapdomo.install` to
`install`, remove unnecessary `override_dh_auto_install`, add URL to
.spec, update Summary, clean up.