Fix icsharpcode#2033: Wrong place for variable declaration.

ILSpy.AddIn: link to license.txt from doc folder.

Merge pull request icsharpcode#1897 from cshung/dev/andrewau/update-t…

…hird-party-notice

Copy the dotnet runtime license text into third-party-notice

Set VersionName = "preview1"

icsharpcode#1773: Remove copies of parameter values only if the types…

… match exactly.

Fix icsharpcode#1689: Add support for null propagation on array acces…

…s: `arr?[i]`

Set 3.0 SDK to RC1

Revert to 3.3.0-beta1 Roslyn. See icsharpcode#1691 (considered atm wo…

…ntfix for 5.0)

Fix references to nested types in generic classes.

Prepare preview3 release.