[api] Way to limit queue state response

[madduck]

The sec/queue/state endpoint seems to return the entire queue, which eventually will get rather large. Most of the time, I reckon that the user only needs the items in queued, progress, and maybe the last 10 items in completed. It would be nice if I could provide a limiting parameter to the GET request.

[eikek]

Yes, this api is still from day 1 on the project :/