v6.1.3: Fix antimeridian wrapping (#57)

• Fix antimeridian wrapping

v6.1.2

• Fixed overflow on max zoom levels higher than 18

v6.1.1

• Fixed a nasty line clipping bug.

v6.1.0

• More flexible constructor (now accepts mapbox::geojson::geojson in addition to feature_collection)
• Geometry collections are now split into separate features in output tiles
• Updated geometry.hpp to 0.8.0

v6.0.0

• Breaking: GeoJSONVT now expects geometry.hpp input instead of raw GeoJSON; the conversion code now lives in geojson-cpp
• Added proper support for feature properties of any type (the values were converted to strings before)

v5.0.0

• Ported codebase to start using https://github.com/mapbox/geometry.hpp@0.1.0
• Optimizations to avoid copying of objects
• Now testing on travis OS X
• Now testing with -faddress=sanitize on travis linux builds
• Added a command line benchmark program make bench
• Started suppressing warnings from third party libraries to enable more warnings for core lib

v4.1.2

• Bump GLFW to v3.1.2.

v4.1.1

• Fix cross-compiling between OS X and Linux
• Remove std::move in favor of compiler optimizations
• Improve constructors to accept const references to avoid extra copy

v4.1.0

• make options member of GeoJSONVT public

v4.0.0

• bump default maxZoom to 18
• buffer option is now an unsigned 16bit integer