Release notes for 0.96.0 (#1457)

* Release notes for `0.96.0`

Please add your new features and breaking changes to the release notes
by opening PRs against the `release-notes-0.96.0` branch.

## TODO
- [ ] look at interesting contributions
- [ ] write all the sections
- [ ] order the sections by interest
- [ ] add the breaking changes
- [ ] detail the breaking changes
- [ ] add the full changelog
- [ ] complete all the `TODO`s inside the release note
- [ ] ... (PRs that need to land before the release, e.g. [deprecations](https://github.com/nushell/nushell/labels/deprecation) or [removals](https://github.com/nushell/nushell/pulls?q=is%3Apr+is%3Aopen+label%3Aremoval-after-deprecation))

* Document std path add breaking change (#1462)

* Start 0.96.0 release notes (#1472)

* Start 0.96.0 release notes

* Continue release notes

* Update typos config

* Do some work on the release notes for 0.96.0 (#1474)

* complete the excerpt

* fill in merged PRs and breaking changes

* typo

* typo

* bring notes for plugin developers out of breaking changes section

* fix unintentional html tags

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Co-authored-by: Tim Martin <[email protected]>
Co-authored-by: Ian Manske <[email protected]>
Co-authored-by: Devyn Cairns <[email protected]>

Author: 4 people