This is a bugfix only release in the 1.8.x series.
gh-4836: partition produces wrong results for multiple selections in equal ranges
gh-4656: Make fftpack._raw_fft threadsafe
gh-4628: incorrect argument order to _copyto in in np.nanmax, np.nanmin
gh-4642: Hold GIL for converting dtypes types with fields
gh-4733: fix np.linalg.svd(b, compute_uv=False)
gh-4853: avoid unaligned simd load on reductions on i386
gh-4722: Fix seg fault converting empty string to object
gh-4613: Fix lack of NULL check in array_richcompare
gh-4774: avoid unaligned access for strided byteswap
gh-650: Prevent division by zero when creating arrays from some buffers
gh-4602: ifort has issues with optimization flag O2, use O1