Moved Artist object model to Model.Artist namespace
Added Release object model
Added exception in gitignore for Model/Release folder
Renamed DiscogsLight to DiscogsService to avoid namespace collisions
Fixed namespaces missing Ucodia prefix
Implemented method to retrieve release from API
Groomed unit test method names and messages
Added Master object model
Remove ExtraArtist models and replaced references by Artist model
Implemented method to retrieve master release from API
Added Label object model
Implemented method to retrieve label from API
Added Search object model
Implemented method to retrieve search results from the API