* get rid of TSParenthesizedType nodes before proceeding with formatting
* fix parens for TSIndexedAccessType, TSFunctionType, TSConditionalType
fixes#6603
* workaround edge cases with one-item unions and intersections
* fix parens for TSInferType
* fix parens for rest elements in tuple types
* refactoring
* fix function types in conditional types
* move tests for rest and optional tuple elements
* fix comment issues
* tests for unions and intersections
* add parens around multiline unions in tuple
* move the parens check for TS nodes closer to the one for Flow nodes
* update CHANGELOG.unreleased.md
* remove dead code
* fix parens for TSConstructorType
* better wording in CHANGELOG.unreleased.md
Georgii Dolzhykov