Fix scenario where source generator isn't detecting parameters passed…

… to WinRT mapped interfaces (microsoft#1867)

* Fix scenario where source generator isn't detecting parameters passed to WinRT mapped interfaces

* Add another test case

Update CsWinRT-Variables.yml (microsoft#1823)

Escape a couple more special characters (microsoft#1807)

* Add more special characters for escaping

* One more special character

Fix ordering of targets impacting WPF scenarios (microsoft#1738)

Update docs (microsoft#1723)

* Update docs

* Rename

* Make table

* Fix

* Fix

* Fix again

* Update

* Update versions

* Line break

* Make version consistent

* Update with exception note

Guard against potential null (microsoft#1695)

Make ICustomPropertyProvider AOT safe (microsoft#1677)

* Add AOT friendly support for ICutomPropertyProvider

* Add missing file and fix attribute

* Change approach to work with generic types and add more tests

* Add authoring test

* Fix check to handle namespaces

* Fix comments

* Fix warnings

* PR feedback

* PR feedback

* Indenting

Partial cherrypick of IsPublic changes in 38a732b (microsoft#1657)

Fix marshaling in AOT source generator (microsoft#1628)

* Fix bool marshaling and array marshaling

* Fix lookup table generation to properly handle authoring scenarios

* Improve comment

Update CsWinRT-Variables.yml (microsoft#1501)