rayshader v0.5.1 (Release date: 2018-09-11):
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• Added `save_3dprint`, a function that exports 3D maps to a stereolithography (STL) format for 3D printing.

• Changed `write_png` to `save_png`.

• Corrected orientation of polygons in `plot_3d`

• Fixed small overhand on 3D base.

• Fixed out-of-bounds bug in C++ normal vector generation.

• `plot_map()` no longer crashes R when "rotate" is a matrix rather than a single numeric value.

• `plot_3d()` now displays warning if hillshade argument contains any values below 0 or more than 1.

• Add hex logo to README