Connected-components-3d

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* release(1.2.0): return an array with a contiguous sequence of labels
* feat: return renumbered array (14)
* docs: correct dense label times to 1.9 sec
* Update README.md
* docs: writeup of benchmark
* docs: added benchmark images
* test+fix: adapt perf.py to work correctly

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* release: small performance improvement from tweaked decision tree
* test: performance masurement
* test: added script for manual testing
* docs: give shoutout to Sutheebanjard
* feat: two decision tree tweaks (10)
* chore: upgrade Dockerfile for new scipy test

* docs: shout out to Grana et al
* feat: replace forward pass with decision tree (8)
* docs: add citation for Wu et al 2005 to README
* chore: update setup.cfg

* fix: no match for std::max due to type mismatch
* chore: update ChangeLog

* perf: skip unifying equal labels
* refactor: use C++ style casts rather than C style
* chore: add GPLv3+ classifier
* fix: compiler warning about printf statement
* chore: bump version to 1.0.5
* fix: 64-bit array length support (5)
* docs: add 64-bit test commented out
* fix: floor of 1 rather than 0 for max\_labels
* fix: zero is a nonsensical value for max\_labels, so set to voxels
* test: drop py34 add py37
* fix: additional places that a 64-bit value could hide
* fix: ensure voxels is computed without an overflow
* fix: handling max\_labels > int32

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* chore: version 1.0.4
* perf: use libdivide for non-power-of two coord calculations
* Update README.md