added curr_abbr query param to getRelease

[schnubor]

Hi,

Discogs updated their release endpoint a little. You can now provide an optional curr_abbr parameter since they now also return a lowest_price, which is pretty neat imho. Works pretty good in my little project.

Cheers, Christian

[ricbra]

Thanks @schnubor

Could you also update the unit test for the release endpoint?

[schnubor]

@ricbra Ok, I updated the tests. Check again? :)

[ricbra]

Thanks @schnubor !