* Revert "KeyBuilder: use system byteorder to match numpy"

This reverts commit cee50279.

* fix numpy hash for bigendian

* speed up endianess determination

* cleanups, add mock test

* broaden test slightly

Co-authored-by: Michał Górny <mgorny@gentoo.org>

* rename _IS_BIGENDIAN

* add comments

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Co-authored-by: Michał Górny <mgorny@gentoo.org>

gh-276

* also run dataclasses test with optimizations enabled

* adjust test

Andreas Klöckner authored 3 months ago and Andreas Klöckner committed 3 months ago

Co-authored-by: Matthias Diener <mdiener@illinois.edu>