0.4.20

• You can now use project_replace argument without Replace argument.
  This used to require you to specify both.

  - #[pin_project(Replace, project_replace = EnumProjOwn)]
  + #[pin_project(project_replace = EnumProjOwn)]
    enum Enum<T> {
        Variant(#[pin] T)
    }

• Makes project_replace argument an alias for Replace argument so that it can be used without a value.

  #[pin_project(project_replace)]
  enum Enum<T> {
      Variant(#[pin] T)
  }

  The Replace argument will be deprecated in the future.

• Suppress unreachable_pub lint in generated code.