macOS compatibility

1.2.1

removed unused test target

MultiPolygon support

1.2

added support for multipolygon, include test app

SPM Support

Dropped support for Carthage

Carthage support

Added public scheme for Carthage build

v1.0.0

Update README.md

Support for standard geometries (excluding collection)

This release is suitable for consuming geojson files with standard geometry types, but not "Geometry Collection" types. Both the Standard (returns properties as dictionary) and Generic (returns strongly-typed properties) are supported.