enhanced shapefiles support

see https://github.com/RandomFractals/geo-data-viewer/blob/master/CHANGELOG.md

• new create geojson setting:

alpha shapefiles geo data support

see #71 for more info

shapefile example in built-in map gallery:

KML and GPX geo data formats support

see changelog

also, added new Blue Hills Hiking GPX map example to the built-in map gallery

try others from this KML, GPX & geojson togeojson lib test data folder:

https://github.com/mapbox/togeojson/tree/master/test/data

topoJSON map view support

see #61 & #63 for more info

try other topojson files from: https://github.com/deldersveld/topojson

keplerGL v2.0.0 & GeoJSON & CSV data loading enhancements

• new sample maps to try:

map gallery display & docs update release

...

docs upate release

plus new view map gallery quick pick list UX feature addition.

see changelog for more info ...

MVP release

see changelog for the initial release features.