code: def near(self, center, sphere=False, min=None, max=None):
  		
  		
  		from marrow.mongo.geo import Point
  		
  		near = {'$geometry': Point(*center)}
  		
  		if min:
  			near['$minDistance'] = float(min)
  		
  		if max:
  			near['$maxDistance'] = float(max)
  		
  		return Filter({self._name: {'$nearSphere' if sphere else '$near': near}})
docs: Order results by their distance from the given point, optionally with range limits in meters.
  		
  		Geospatial operator: {$near: {...}}
  		Documentation: https://docs.mongodb.com/manual/reference/operator/query/near/#op._S_near
  		
  			{
  				$near: {
  					$geometry: <center; Point or (long, lat)>,
  					$minDistance: <min; distance in meters>,
  					$maxDistance: <max; distance in meters>
  				}
  			}
  		
  		Geospatial operator: {$nearSphere: {...}}
  		Documentation: https://docs.mongodb.com/manual/reference/operator/query/nearSphere/#op._S_nearSphere
  		
  			{
  				$nearSphere: {
  					$geometry: <center; Point or (long, lat)>,
  					$minDistance: <min; distance in meters>,
  					$maxDistance: <max; distance in meters>
  				}
  			}