REST API: get your node data

Please can I check a couple of the current API limitations with you:

• There seems to be a hard limit of 100 records when using http://thethingsnetwork.org/api/v0/nodes/02011E01/?format=json&limit=300 Are you deleting all but the most recent 100 records out of the database?
• time_span=10h ...or time_span generally doesn't seem to work.

Thanks, Mark