- ``ns.LOCALE``/``humansorted`` now accounts for thousands separators.
- Refactored entire codebase to be more functional (as in use functions
as units). Previously, the code was rather monolithic and difficult
to follow. The goal is that with the code existing in smaller units
contributing will be easier.
- Deprecated ``ns.TYPESAFE`` option as it is now always on (due to a new
iterator-based algorithm, the typesafe function is now cheap).
- Increased speed of execution (came for free with the new functional
approach because the new factory function paradigm eliminates most
``if`` branches during execution).
- For the most cases, the code is 30-40% faster than version 4.0.4.
- If using ``ns.LOCALE`` or ``humansorted``, the code is 1100% faster
than version 4.0.4.
- Improved clarity of documentaion with regards to locale-aware sorting.
- Added a new ``chain_functions`` function for convenience in creating
a complex user-given ``key`` from several existing functions.