Merge master to features/readonly-members#33836

Merged

2 commits merged intofeatures/readonly-membersfrom merges/master-to-features/readonly-members

Mar 3, 2019

+223-19

Commits on Mar 2, 2019

added ability to clear all diagnostics reproted from a IDiagnosticUpd… (#33805 )
heejaechang
authored
Text on a InterpolatedVerbatimStringStartToken token (#33747 )
jcouv
authored