Bump version to v2021.4.2-preview 

Bump `package.json` version Planning to automate this next time.

Bump to v2021.2.2, "stable" 

Disabled 'proposed' APIs (PowerShell#3203) Since we can't publish with this.

Bump @types/node from 14.14.25 to 14.14.28 (PowerShell#3185) Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 14.14.25 to 14.14.28. - [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases) - [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node) Signed-off-by: dependabot-preview[bot] <support@dependabot.com> Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

[Ignore] rev to v2020.9.0-preview and update CL (PowerShell#2955) * rev to v2020.9.0-preview and update CL * Update CHANGELOG.md Co-authored-by: Robert Holt <rjmholt@gmail.com> * Update CHANGELOG.md * Update CHANGELOG.md Co-authored-by: Robert Holt <rjmholt@gmail.com>

[Ignore] Add additional items to CHANGELOG (PowerShell#2840) 

[Ignore] Add additional items to CHANGELOG (PowerShell#2840) 

update cl for stable (PowerShell#2758) 

rev version to 2020.6.1 update CL (PowerShell#2747)