Merge pull request #51 from eleybourn/master

Merge pull request #630 from Grunthos/master
Fixes & cleanups to query string format code

- now appends '*' to words when searching via FTS
- removes all puncutation when searching Amazon
Merge branch 'master' of https://github.com/Grunthos/Book-Catalogue
When importing book covers from an archive, set the cover date based on
original

NOTE: this has implications for "Backup New & Changed"...such covers
(and books based on existing code) will not be included in incrementals.

We need a better incremental backup strategy; the current one is
designed around syncing, and no backup.
5.1.0 release changes
Merge pull request #632 from Grunthos/master

5.1 Release