Support *limit* input and *traffic share* output parameters for "metrics by country"
Mihai
Would be useful to have a limit parameter for the metrics by country in the API/MCP, in order to avoid having to use something like 50 rows when looking for the top 5 countries.
Additionally, having the output include a traffic share field, in addition to the raw traffic values, would provide a fast way to assess country distribution, similar to the UI (and especially helpful with a limit parameter).