Fastremap

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* release(1.13.0): using improved map for faster renumber, remap, more
* perf: switch to ska::flat\_hash\_map instead of std::unordered\_map (30)

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* release(1.12.2): release binaries with broader numpy ABI compat
* chore: use oldest-supported-numpy when building wheels

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* release(1.12.1): unique accepts empty arrays
* fix: fastremap.unique doesn't accept empty arrays

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* release(1.12.0): new point\_cloud and foreground functions
* feat(point\_cloud): new point\_cloud and foreground functions (28)
* fix(renumber): preserve\_zero=False w/ arrays starting with 0

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* release(1.11.4): fixes issue with inverse\_component\_map
* chore: update changelog
* chore: support only py36 - py39
* chore: drop py27 from build
* fix(inverse\_component\_map): not checking component for continue cond

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* release(1.11.2): fix numpy deprecation of np.bool
* fix: further fix numpy deprecation of np.bool
* chore: fix numpy 1.20 deprecation of np.bool in favor of bool
* chore: update setup.cfg