3.1.8 (CellProfiler#3707)

* Update setup.py

* Update __init__.py

* Update conf.py

3.1.7 (CellProfiler#3706)

* Update conf.py

* Update __init__.py

3.1.6

3.1.5 (CellProfiler#3607)

3.1.4 (CellProfiler#3592)

* Update __init__.py

* Update conf.py

Re-add config write types (this time with more documentation) (CellPr…

…ofiler#3535)

Make image saving work with 5+ channels (CellProfiler#3532)

* Images with more than 4 "color" channels should be transposed to CYX

* Add unit test for 5+ channel tiff

Add settings revision for watershed and rename parameters for clarity (…

…CellProfiler#3526)

Merge pull request CellProfiler#3525 from AllenInstitute/issues/3521

Add ability to preserve labels and parameters for labeling

Bump for 2.3.1 release