v4.4.2

Changelog

v4.4.2

• polarathene: Replace README relative links with fully-qualified links.

• polarathene: Improve docs for stable_examples/examples/std_global_allocator.rs.

• Improved docs for stable_examples/examples/stable_allocator_api.rs and stable_examples/examples/std_global_allocator.rs.

• Deprecated the Span::from* function for converting from shared references and const pointers, as they make committing UB easy. These will be removed in v5.

• Fixed up a bunch of warnings all over the project.