new version

[asinghvi17]

Release notes:

• Add an extension on TGGeometry.jl, a Julia wrapper of the tg library for fast, non-exact geometric predicates. Access by e.g. GO.intersects(GO.TG(), geom1, geom2). #271
• Refactor reproject, in the Proj extension, to be completely safe when invoked with threaded=true. Note that it will still not be thread safe if invoked in multiple threads at the same time. See below for the changes that were made in the course of this refactor. #288
• Refactor the apply pipeline to get rid of closures in favour of Applicators, which are able to run apply on arrays, geoms and featurecollections. Some examples are ApplyToPoint, ApplyToGeom, etc. These are mainly used by internal methods in the apply pipeline. #288
• Add a TaskFunctors struct that allows one to use individual functors per task. This allows thread safety for reentrant C APIs. #288