* Fix backup restore dropping library entries
History restore resolved chapters by URL alone, so a backup holding the
same entry twice under one source matched multiple chapter rows and threw
`ResultSet returned more than 1 row`. Scope the lookups to the entry.
Entries are restored in chunks of 100 sharing one transaction. SQLDelight
fails the enclosing transaction when a nested one fails, so catching the
per-entry exception did not contain it and the whole chunk rolled back,
losing up to 100 entries per bad one. Retry entry by entry on failure.
Refs #647
* Update changelog
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Co-authored-by: Naji Astier <na-ji@users.noreply.github.com>
