zw-fast-quantile python binding

pip install zw_fast_quantile_py

import zw_fast_quantile_py

summary = zw_fast_quantile_py.IntQuantileSummary(0.01)
summary.update(1,2,3,4,5,6,7,8,9,10)
summary.query(0.0)

We calculate the median of [1, 1000], the zw_fast_quantile_py is slightly slower than statistics.quantiles due to the serilization cost between python and extension.

502
4.4792000000000096e-05

499.5
3.883300000000027e-05