ricobeck/KFEpubKit — pull request #4 by jstart (2014-04-03 23:04:46+00:00)
Title: Ability to keep meta data if there are duplicate keys

Sample meta-data from an EPUB with this issue:
9780316219259
B00BWQW73E
877a0722-d692-48f4-b491-40a0af0157e1
877a0722-d692-48f4-b491-40a0af0157e1

The current implementation of meta data will only return the last id (the calibre id) instead of all 4 entries. I am appending the opf:scheme stringValue to make it a unique key.

Let me know if this requires any changes. I can write a unit test if necessary and add this sample meta-data to the unit testing resources.