Error responses should contain more information

[rikkit]

Commit 1729119 added a switch to catch request exceptions from api actions, should preserve more information if this is used.

See this StackOverflow comment

[rikkit]

Expanding this issue to cover improving the error codes. "Bad Method Signature" isn't descriptive and doesn't suggest a solution - in this case it'd be to make sure your api keys are correct

[rikkit]

API returns "Missing Parameters" error code for albums which don't exist

{
  "error": 6,
  "message": "Album not found",
  "links": []
}

Code 6 corresponds to LastResponseStatus.MissingParameters, which implies there is something wrong with the request itself.

[rikkit]

Tidying issues