Fast-histogram

- Fixed compatibility of test suite with latest version of the hypothesis package. [40]

- Fix definition of numpy as a build-time dependency. [36]

- Define numpy as a build-time dependency in pyproject.toml. [33]
- Release the GIL during calculations in C code. [31]

- Fix bug that caused histograms of n-dimensional arrays to not be computed correctly. [21]
- Avoid memory copies for non-native endian 64-bit float arrays. [18]
- Avoid memory copies for any numerical Numpy type and non-contiguous arrays. [23]
- Raise a better error if arrays are passed to the `bins` argument. [24]

- Make sure that Numpy is not required to run setup.py. [15]
- Fix installation on platforms with an ASCII locale. [15]

- Use long instead of int for x/y sizes and indices
- Implement support for weights= option