Merge pull request OmniSharp#1897 from JoeRobich/update-roslyn

Update Roslyn version and tooling to better match NET 5 Preview8

Merge pull request OmniSharp#1886 from OmniSharp/update-changelog

Update changelog for 1.36.1 release

Update CHANGELOG.md (OmniSharp#1879)

Merge pull request OmniSharp#1857 from JoeRobich/get-dotnetinfo-once

Only request dotnet info once for the solution or directory

Merge pull request OmniSharp#1832 from JoeRobich/update-roslyn-3.7.0-4

Update Roslyn to 3.7.0-4.20311.4

Merge pull request OmniSharp#1805 from JoeRobich/update-changelog-2

Update changelog for 1.35.2 release

Merge pull request OmniSharp#1780 from JoeRobich/update-changelog

Update changelog for 1.35.1 release

Merge pull request OmniSharp#1762 from JoeRobich/update-changelog

Updated changelog for 1.35.0 release

Merge pull request OmniSharp#1747 from JoeRobich/update-changelog-1.3…

…4.15

Update changelog with release date for 1.34.15

Merge pull request OmniSharp#1729 from JoeRobich/update-changelog-1.3…

…4.14

Update changelog release date for 1.34.14