Suggest types (and intrinsic type keywords) after "(" when declaring a tuple type as the type of a member.

Fixes #14127

My forms completion

Signature help improvements for C# tuples (renamed to work around jenkins issues)

Use actual multiline string literals in VB tests.

Merge dev15-rc into master

Add a feature to convert existing code to use pattern matching instead of is/as checks.

Allow disabling of formatting while typing.

Fixes #8224 
Fixes #5873

Add a feature to convert existing code to use 'x is Type t' pattern.

Don't dismiss intellisense if the user types a number after a dot.

Reduce string allocation from TextFactory

Add filters for keywords and snippets.

Fixes #14528

Share common logic in indentation.

use new language property of compilation/parseoption to find out which type it is