* added utf-8 markers to all .py files in plugins/filter
* added utf-8 markers to all .py files in plugins/inventory
* added utf-8 markers to all .py files in plugins/lookup
* Add dependent lookup plugin.
* Use correct YAML booleans.
* Began complete rewrite.
* Only match start of error msg.
* Improve tests.
* Work around old Jinja2 versions.
* Fix metadata.
* Fix filter name.