now fully sf version

cran 0.5.5 version

minor changes to pass new cran checks

Fixed a serious bug in estimation of the uncertainty in the summary function; removed GeoLight dependency.

small changes to make FLightR work with R 4.1.0

small bug fixes in calibration function, FLightR2Movebank function added

1. Works with gmap>=3.0.0.
2. Added Lat2000 geolocator support
3. small bug fixes

CRAN release 0.4.7 google maps api key corrections and many other small things