v0.22.1

What's Changed

One new feature:

• Add a function to upcast UniquePtr by @bsilver8192 in #1112 (thanks!)

A roll of the minimum cxx version to work around a new clippy warning:

• Roll cxx minimal version. by @adetaylor in #1104

Lots of bug fixes:

• Solve anonymous namespaces and other problems by @adetaylor in #1088
• Ignore types named _bindgen_ty by @adetaylor in #1091
• Alter mdbook-mermaid installation. by @adetaylor in #1102
• Succeeding test for issue 1081 by @adetaylor in #1101
• Fix and test extern_cpp_type with type in a C++ namespace by @bsilver8192 in #1100
• Adding lots of ignored tests by @adetaylor in #1106
• Reject type params in typedefs by @adetaylor in #1108
• Issue 1094 by @adetaylor in #1095
• Fix #1092. by @adetaylor in #1093
• Reject typedefs to anon namespaces. by @adetaylor in #1107
• Fix and test subclass without safety!(unsafe) by @bsilver8192 in #1111
• Fix and test subclasses with C++ std in scope by @bsilver8192 in #1110

There is currently a known soundness problem, as noted in #1006.

Full Changelog: v0.22.0...v0.22.1