Factor-analyzer

What's Changed
* Pre commit to dev by jmahlik in https://github.com/EducationalTestingService/factor_analyzer/pull/131
* Fix ReadTheDocs build by desilinguist in https://github.com/EducationalTestingService/factor_analyzer/pull/133
* Replace non-existent top level scipy functions. by desilinguist in https://github.com/EducationalTestingService/factor_analyzer/pull/135

New Contributors
* jmahlik made their first contribution in https://github.com/EducationalTestingService/factor_analyzer/pull/131

**Full Changelog**: https://github.com/EducationalTestingService/factor_analyzer/compare/v0.5.0...v0.5.1

What's Changed
* Add a test of the hypothesis that the selected number of factors is sufficient by aglebov in https://github.com/EducationalTestingService/factor_analyzer/pull/121
* Add reference and example for FactorAnalyzer.sufficiency() by aglebov in https://github.com/EducationalTestingService/factor_analyzer/pull/122
* Fix for latest `scipy.minimize` changes by ikeuchi-screen in https://github.com/EducationalTestingService/factor_analyzer/pull/124
* Switch all tests from `nose` to `nose2` by desilinguist in https://github.com/EducationalTestingService/factor_analyzer/pull/127

New Contributors
* aglebov made their first contribution in https://github.com/EducationalTestingService/factor_analyzer/pull/121
* ikeuchi-screen made their first contribution in https://github.com/EducationalTestingService/factor_analyzer/pull/124

**Full Changelog**: https://github.com/EducationalTestingService/factor_analyzer/compare/v0.4.1...v0.5.0

What's Changed

This is a minor release with a few new features, improvements, and bugfixes.

IMPORTANT: We no longer support Python 3.7 or older.

* Fix minor issue with regard to randomized_svd() by schnell3526 in https://github.com/EducationalTestingService/factor_analyzer/pull/95
* Fixing bug regarding unbound `new_order` variable by jbiggsets in https://github.com/EducationalTestingService/factor_analyzer/pull/98
* Fixing minor bug in correlation function by jbiggsets in https://github.com/EducationalTestingService/factor_analyzer/pull/111
* Add pre-commit checks and various other cleanup & fixes by desilinguist in https://github.com/EducationalTestingService/factor_analyzer/pull/112
* Remove incorrect `psi` and use correct `phi_`. by desilinguist in https://github.com/EducationalTestingService/factor_analyzer/pull/113
* Update documentation and add random seed by desilinguist in https://github.com/EducationalTestingService/factor_analyzer/pull/114

New Contributors
* schnell3526 made their first contribution in https://github.com/EducationalTestingService/factor_analyzer/pull/95

**Full Changelog**: https://github.com/EducationalTestingService/factor_analyzer/compare/v0.4.0...v0.4.1

What's Changed

This is a minor release with a few new features, improvements, and bugfixes.

**IMPORTANT**: Although `factor_analyzer` *can* work on Python < 3.7, we do not support these older versions.

* Update FactorAnalyzer docstring by juanbenitezdev in https://github.com/EducationalTestingService/factor_analyzer/pull/58
* Save weights as an attribute by desilinguist in https://github.com/EducationalTestingService/factor_analyzer/pull/59
* Re-order the structure matrix by keesmulder in https://github.com/EducationalTestingService/factor_analyzer/pull/51
* Corrected error message by hotessy in https://github.com/EducationalTestingService/factor_analyzer/pull/61
* Fix Bartlett p-value by jbiggsets in https://github.com/EducationalTestingService/factor_analyzer/pull/66
* Adding Geomin to rotations by jbiggsets in https://github.com/EducationalTestingService/factor_analyzer/pull/64
* Update branch names in README. by desilinguist in https://github.com/EducationalTestingService/factor_analyzer/pull/68
* Migrate CI builds from Travis to Gitlab by desilinguist in https://github.com/EducationalTestingService/factor_analyzer/pull/75
* Add multiple SVD methods and address other issues by jbiggsets in https://github.com/EducationalTestingService/factor_analyzer/pull/76
* Fix minor issue with signs in Varimax rotation matrix by jbiggsets in https://github.com/EducationalTestingService/factor_analyzer/pull/79
* Add docs badge to README by desilinguist in https://github.com/EducationalTestingService/factor_analyzer/pull/83

New Contributors
* juanbenitezdev made their first contribution in https://github.com/EducationalTestingService/factor_analyzer/pull/58
* keesmulder made their first contribution in https://github.com/EducationalTestingService/factor_analyzer/pull/51
* hotessy made their first contribution in https://github.com/EducationalTestingService/factor_analyzer/pull/61

**Full Changelog**: https://github.com/EducationalTestingService/factor_analyzer/compare/v0.3.2...v0.4.0

This is a minor release of `factor_analyzer`. It includes the following bug fixes.

- Fixed a bug in the way that `oblimin` is calculated when using `gamma`.
- Allowed users to directly pass the value of `ddof`.
- Fixed a bug in the way KMO was being calculated, which was resulting in `NaN`s.

This is a hotfix release, which includes two primary updates:

- The `ConfirmatoryFactorAnalyzer` class's `fit()` method now returns `self`.
- The requirements no longer require specific versions of `sklearn`, `numpy`, and `scipy`.