ReverseMode no longer used

[diegogarciar]

Hello, I am using the latest version of mapbox/mapbox-gl-geocoder and I'm having the following error:

The following keys are invalid: reverseMode
I went into the code and it seems that MapboxGeocoder doesn't use that parameter anymore and this error is breaking the geocoder completely. I went into your code and deleting reverseMode as an option fixed the problem.

[karol-bujacek]

The same issue here. This plugin is almost unusable without further modifications.