all current geocoders now always return an array - even for a single result. Also fixed a few instances of the rowlimit being ignored, and moved the default of 1 for rowlimit into the mxn code, not the implementations.
fixed reverse geocoder examples to use array input
further work on making geocoders return an array.

Thanks for the yandex geocoder help from this commit 763424fby @ChAlkeR
Merge branch 'refs/heads/geocoder-breaking-change' into release-3.0