Mygrad

What's Changed
* Improve nnet.initializers docs by davidmascharka in https://github.com/rsokl/MyGrad/pull/400
* remove unnecessary wraps from uber by rsokl in https://github.com/rsokl/MyGrad/pull/401
* Bump numpy from 1.18.1 to 1.21.0 in /docs by dependabot in https://github.com/rsokl/MyGrad/pull/402
* Fix tests by rsokl in https://github.com/rsokl/MyGrad/pull/403
* Bump numpy from 1.21.0 to 1.22.0 in /docs by dependabot in https://github.com/rsokl/MyGrad/pull/404
* Add Ellipsis to IndexType and permit arbitrary-length tuples in index by rsokl in https://github.com/rsokl/MyGrad/pull/406
* Drop support for numpy 1.19 by rsokl in https://github.com/rsokl/MyGrad/pull/405
* Simplify back-prop scheme by rsokl in https://github.com/rsokl/MyGrad/pull/407
* Touchup internal annotations by rsokl in https://github.com/rsokl/MyGrad/pull/408
* remove bad use of wraps in test by rsokl in https://github.com/rsokl/MyGrad/pull/409
* Improve test suite and CI by rsokl in https://github.com/rsokl/MyGrad/pull/411
* Bump actions/checkout from 1 to 3 by dependabot in https://github.com/rsokl/MyGrad/pull/413
* Bump actions/setup-python from 2 to 4 by dependabot in https://github.com/rsokl/MyGrad/pull/412
* Bump sphinx-rtd-theme from 0.5.2 to 1.1.1 in /docs by dependabot in https://github.com/rsokl/MyGrad/pull/416
* Bump sphinx from 3.5.4 to 5.3.0 in /docs by dependabot in https://github.com/rsokl/MyGrad/pull/414
* Bump numpydoc from 1.1.0 to 1.5.0 in /docs by dependabot in https://github.com/rsokl/MyGrad/pull/415
* prepare new release by rsokl in https://github.com/rsokl/MyGrad/pull/420

New Contributors
* dependabot made their first contribution in https://github.com/rsokl/MyGrad/pull/402

**Full Changelog**: https://github.com/rsokl/MyGrad/compare/v2.1.0...v2.2.0

See detailed changelog [here](https://mygrad.readthedocs.io/en/latest/changes.html#v2-1-0).

What's Changed
* update docs dependencies, fix deprecated css, fix doc typo by rsokl in https://github.com/rsokl/MyGrad/pull/376
* Use faster dict-construction syntax by rsokl in https://github.com/rsokl/MyGrad/pull/377
* Update default behavior of derivative of linalg.norm and abs at x=0 by rsokl in https://github.com/rsokl/MyGrad/pull/379
* add nightly tests against pre-releases by rsokl in https://github.com/rsokl/MyGrad/pull/380
* Adds mygrad.save and mygrad.load by rsokl in https://github.com/rsokl/MyGrad/pull/383
* accommodates hypothesis 3065 by rsokl in https://github.com/rsokl/MyGrad/pull/385
* remove bad example from docs; improve type annotations by rsokl in https://github.com/rsokl/MyGrad/pull/386
* Implement atleast_kd by rsokl in https://github.com/rsokl/MyGrad/pull/387
* Update test_duplicating_graph.py by rsokl in https://github.com/rsokl/MyGrad/pull/388
* test should not pass None to array(..., copy=<>) by rsokl in https://github.com/rsokl/MyGrad/pull/390
* fix broadcasting hack by rsokl in https://github.com/rsokl/MyGrad/pull/391
* NEP 29: min numpy is now 1.19 by rsokl in https://github.com/rsokl/MyGrad/pull/394
* add Tensor.__index__ method by rsokl in https://github.com/rsokl/MyGrad/pull/395
* Implement clip(..., out=) by rsokl in https://github.com/rsokl/MyGrad/pull/396
* Docs for 2.1.0 by rsokl in https://github.com/rsokl/MyGrad/pull/397


**Full Changelog**: https://github.com/rsokl/MyGrad/compare/v2.0.2...v2.1.0

See [changelog](https://mygrad.readthedocs.io/en/latest/changes.html#v2-0-2)

See the [changelog](https://mygrad.readthedocs.io/en/latest/changes.html#v2-0-1)

See [the changelog](https://mygrad.readthedocs.io/en/latest/changes.html#v2-0-0) for all of the details!