v0.12.1

What's Changed

• Fixed C API example and added document
• Support building for both x86 & x86_64
• rearranged and linked docs
• ffi_prep_closure deprecated
• fix link to releases
• fix issue when calling functions returning float/real/string
• stop crash on functions returning null pointer
• MacOS binaries not longer provided due to support withdrawn from build provider travis-ci.com. Can still be built from source using instructions provided. May reappear when new build provider used.

Full Changelog: v0.12.0...v0.12.1