Merge pull request #108 from spotify/Release-4.0.0

Release 4.0.0

* update Chartify
* drop support for python 3.8

Merge pull request #103 from tjofas/release-3.0.4

Adding release 3.0.4

Merge pull request #99 from hyperc54/hyperc54-patch-1

Correct typo in sample_size_calculator.py dosctring

Update setup.cfg

Merge pull request #89 from spotify/Release-3.0.1

Added reference level point estimate to hover box of difference plots

Merge pull request #85 from spotify/Release-3.0.0

Dropped support for python 3.6

Merge pull request #81 from spotify/Release-2.7.7

Release 2.7.7

Release 2.7.6 (#79)

* Release 2.7.6

* Update for release

Merge pull request #78 from spotify/Release-2.7.5

Release 2.7.5

Release 2.7.4 (#72)

* fixing ssc check when there are nans

* Updating release

* cleaning up the condition

* Removing nans from checking equality

* Added a sample size calculator test with None values to make sure it doesn't throw exception, but instead returns None sample size

Co-authored-by: Pelle Sillrén <[email protected]>