- Add a case-folding version of Natural sort order
This can be used to perform case-insensitive comparisons and sorting.
It's been placed in a separate sub-package because it requires the Unicode
tables in the standard library, which can add significantly to binary size.
full diff: https://github.com/fvbommel/sortorder/compare/v1.0.2...v1.1.0
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>