TypeScript 3.8.2

This release updates TypeScript to 3.8.2 and includes syntax highlighting fixes and updates for new language constructs.

Additionally, it contains the following fixes and improvements:

• Provides a copy link for hover tooltips (#724, thanks to @kylebebak)
• Provides a more Sublime-like experience for tabbing through completions (#733, thanks to @matthandlersux)
• Correctly displays Signature Help when started from subl (#734, thanks to @adill)
• Provides the node_args, tsserver_args, and tsserver_env options (#730, thanks to @mattbroussard)