Added tests and implementation for package data
Added further test and implementation to check Formats item within package data
[SRCH-1333] MF/MO completed package tests and implementation for release details and track details
[SRCH-1333] MF/MO added package tests and implementation for release/tracks
MF/MO fixed test for ReleaseByDateTests
Merge pull request #207 from minkaotic/master

Updated catalogue endpoints to parse new download elements