Add support for filtering transaction list by type

[byrnereese]

See: https://developer.bitreserve.org/en/community#!/bitreserve-developer/general%23list-card-issue-in-android

A developer has asked if we support retrieving a list of transactions that is filtered by type. This would be super helpful I think for a number of reasons. I wonder if implementing a new search endpoint would be a better approach? It might be more logical in some respects.

[fixe]

+1 for using query string for filtering resources.

Reference: http://www.vinaysahni.com/best-practices-for-a-pragmatic-restful-api#advanced-queries

[ruimarinho]

Another +1 for query string. The use case is interesting and expected too.

[rplopes]

Closing, as this seems to be related to product, not documentation.