fixed: Unused do not become used
Add [<Struct>] attribute if necessary
Minor fix
Merge pull request #867 from OkayX6/go-to-metadata-built-in-types

Add [<Struct>] attribute if necessary
Merge pull request #869 from vasily-kirichenko/fix-unused-do-not-become-used

Fixed: unused opens/declarations may be highlighted as used even though they've become used
[Order(Before = Priority.Default)] => [Order(After = Priority.Low, Before = Priority.Default)] for all ClassificationFormatDefinition
fixed compilation warnings
Merge pull request #871 from vasily-kirichenko/fix-classification-spans-priority

fixed classification spans order
fixed: escaped characters are not highlighted in string type provider static parameters
Merge pull request #873 from vasily-kirichenko/escaped-chars-highlighted-in-tp-params

fixed: escaped characters are not highlighted in string type provider static parameters