Changelog for ppad-fixed-0.1.3

# Changelog - 0.1.3 (2025-12-28) * Makes some backward-incompatible API tweaks to Data.Choice: * 'from_word_mask# is now 'from_full_mask#' * 'from_word#' is now 'from_bit#' - 0.1.2 (2025-12-27) * Fixes an API mistake made in the v0.1.1 release. - 0.1.1 (2025-12-27) * Contains miscellaneous hardening and API refinements to v0.1.1. - 0.1.0 (2025-12-21) * Initial release, supporting wide, wider, and secp256k1-related Montgomery-form words with supporting constant-time operations.