Update to the latest stable release.

The main Improvements and Fixes for this release are:

• Book and video collections can be imported from file metadata;
• All entry templates were updated to include any loan information;
• Creating and viewing the internal log file is supported through the --log and --logfile command-line options;
• The DBUS interface can output to stdout using -- as the file name;
• Choice fields are now allowed to have multiple values;
• The iTunes, Discogs, and MusicBrainz sources now separate multi-disc albums;
• A configurable locale was added to the IMDb data source;
• The Allocine and AnimeNFO data sources were removed;

As a precautionary measure the release notes state:

 Especially since this has many updates and changes in the underlying library code,
 please backup your data before switching to the new version.
 Creating a full backup file can be done by using the Export to Zip option which will create a file
 with all your images together with the main collection.