v0.16.0

This release introduces navigation & highlighting of references inside directives like use, provides completions for some of them, fixes shorthand let directives. Optimise imports will no longer report false negatives.

Many thanks to @anstarovoyt for enabling debugger.

• Initial support of directives
• Debugger support

This is dual release, 0.16.0 works with 2020.1 & 2020.2, 0.16.0.203 works with 2020.3