Merge pull request apple#238 from aseemw/dev/bump_coremltools_version

Change version to 2.0 for release

Merge pull request apple#128 from znation/min_numpy_version

Bump min numpy version to 1.10.0

Merge pull request apple#74 from TobyRoseman/custom-layers-and-half-p…

…recision

Support for custom layers and half precision floating point.

Merge pull request apple#19 from apple/dev/hot-fix-again-for-CPU

Dev/hot fix again for cpu

coremltools 0.5.1 release

* Move documentation to https://apple.github.io/coremltools