Update the changelog for the 2019.0 final release.

CHANGELOG.md

@@ -57,7 +57,7 @@ community for creating a fantastic programming language and community to be a
 part of!
 
 
-## 2019.6.0-rc (19 June 2019)
+## 2019.6.0 (25 June 2019)
 
 ### Enhancements
 
@@ -181,6 +181,12 @@ part of!
    ([#5983](https://github.com/Microsoft/vscode-python/issues/5983))
 1. Account for files being opened in Visual Studio Code that do not belong to a workspace.
    ([#6624](https://github.com/Microsoft/vscode-python/issues/6624))
+1. Accessibility pass on plot viewer
+   ([#6020](https://github.com/Microsoft/vscode-python/issues/6020))
+1. Allow for both password and self cert server to work together
+   ([#6265](https://github.com/Microsoft/vscode-python/issues/6265))
+1. Fix pdf export in release bits.
+   ([#6277](https://github.com/Microsoft/vscode-python/issues/6277))
 
 ### Code Health