Release notes v4.0.0 (dotnet#1389)

* 4.0 release notes

* Update 4.0.0.md

* Update 4.0.0.md

* Update 4.0.0.md

* Update README.md

* Update 4.0.0.md

* Update release-notes/4.0/4.0.0.md

Co-authored-by: David Engel <[email protected]>

* Update release-notes/4.0/4.0.0.md

Co-authored-by: David Engel <[email protected]>

* add changes

* Update release-notes/4.0/4.0.0.md

Co-authored-by: DavoudEshtehari <[email protected]>

* add SqlClientLogger changes

* typos

Co-authored-by: David Engel <[email protected]>
Co-authored-by: DavoudEshtehari <[email protected]>

Release notes for v4.0.0-preview3 (dotnet#1363)

* add 4.0.0-preview3 release notes

* Update CHANGELOG.md

Co-authored-by: DavoudEshtehari <[email protected]>

* Update CHANGELOG.md

Co-authored-by: DavoudEshtehari <[email protected]>

* address feedback

* typos

* Apply suggestions from code review

Co-authored-by: Cheena Malhotra <[email protected]>

* Update release-notes/4.0/4.0.0-preview3.md

Co-authored-by: DavoudEshtehari <[email protected]>

* Apply suggestions from code review

Co-authored-by: DavoudEshtehari <[email protected]>

* update version number

Co-authored-by: DavoudEshtehari <[email protected]>
Co-authored-by: Cheena Malhotra <[email protected]>

Release notes for v3.0.1 (dotnet#1281)

Release notes v4.0.0-preview2 (dotnet#1269)

[Release 2.1] Release notes for v2.1.4 (dotnet#1267)

Release notes 4.0.0 preview1 (dotnet#1222)

AKV provider v3.0.0 release notes (dotnet#1113)

3.0 GA release notes (dotnet#1107)

[Release 2.1] Release notes for v2.1.3 (dotnet#1082)

Release notes for v3.0.0-preview3 (dotnet#1079)