Changelog for ppad-sha256-0.2.3

# Changelog - 0.2.3 (2025-01-21) * Improves padding handling for the strict bytestring case, yielding performance increases for both 'hash' and 'hmac'. - 0.2.2 (2025-01-07) * Minor bytestring-handling optimisations. - 0.2.1 (2024-10-13) * Adds an INLINE pragma to an internal step function. * 'hmac' no longer calls 'hmac_lazy', which has no practical effect other than to clean up profiling reports generated by GHC. - 0.2.0 (2024-10-07) * 'hmac' and 'hmac_lazy' now hash long keys before computing a HMAC, instead of throwing an error, matching RFC 2104's suggested behaviour. - 0.1.0 (2024-09-14) * Initial release, supporting SHA256 and HMAC-SHA256 on strict and lazy bytestrings.