@turf/destination error with bearing=90

I noticed the returned point is not exactly at 90 degrees from the input, i.e. the latitude changes. I’ll create an additional test in @turf/destination to highlight the error.

[stebogit]

A module like @turf/rhumb-destination would probably also “solve” #684, as it would properly move a point of the exact/expected distance.

[stebogit]

@DenisCarriere after some research I found out the reason why this module returns an unexpected output is that it follows a great-circle distance to take in account the earth curvature, while somebody working on a 2D map would actually expect a movement along a Rhumb line.

geodesy is a great library that implements different methods along those lines.

I’d be happy to implement like @turf/rhumb-destination, @turf/rhumb-distance and @turf/rhumb-bearing modules using that library, or maybe taking cues from it, as I believe it might result in a not lightweight dependency

cc: @rowanwins