Ngt

What's Changed
* Export NGT Property to C API and add struct and function to get it by kmrmt in https://github.com/yahoojapan/NGT/pull/166

New Contributors
* kmrmt made their first contribution in https://github.com/yahoojapan/NGT/pull/166

**Full Changelog**: https://github.com/yahoojapan/NGT/compare/v2.2.3...v2.2.4

What's Changed
* Feature SIMD support for Hamming Distance. by kpango in https://github.com/yahoojapan/NGT/pull/160
* [BUGFIX] Unsupported instruction was included in the Hamming distance AVX512 processing. by kpango in https://github.com/yahoojapan/NGT/pull/163
* Add getGraphStatistics method and GraphStatistics class and it's exported C API by kpango in https://github.com/yahoojapan/NGT/pull/165


**Full Changelog**: https://github.com/yahoojapan/NGT/compare/v2.2.2...v2.2.3

**Full Changelog**: https://github.com/yahoojapan/NGT/compare/v2.2.1...v2.2.2

**Full Changelog**: https://github.com/yahoojapan/NGT/compare/v2.2.0...v2.2.1

Added inner product to the distance functions, along with some experimental features.

**Full Changelog**: https://github.com/yahoojapan/NGT/compare/v2.1.6...v2.2.0

**Full Changelog**: https://github.com/yahoojapan/NGT/compare/v2.1.5...v2.1.6