Latitude longitude filter

Latitude/Longitude filter:

This filter let you define points and a radius in order to define areas. Then, the filter could discard bid requests not belonging to those areas.

Agent config example to use the filter:

{
...
"latLongDevFilter": [{"lat": 37.123, "radius": 15.5, "long": -92.456}]
...
} 

Simple suggestion, when adding the config you could build a mask/set with all the configs that have the filter present which would turn this branch into a single call to narrowConfigs with your mask.

This would minimize the impact of the filter for the community at large when no geo information is present.