Log Message:
update to 0.4
changes:
* Improve documentation
* Fix get_recordings_by_puid/isrc
* Update search fields
* Parse CDStubs in release results
* Correct release_type/release_status checking
* Allow iso-8859-1 passwords
* Convert single isrcs to list when submitting
* Parse ISRC results
* Escape forward slashes in search queries
* Package documentation and examples in release