Brassica changelog

Unreleased changes

• Allow category backreferencing with @n before category
• Allow forcing nondeterminism with @? before category
• Add ‘input→output’ format for output words
• Change default output format for MDF input to wordlist in CLI
• Add ‘or environments’ with syntax ‘target / replacement / env1 / env2 / env3 / …’. Former rule exceptions with similar syntax have been changed to syntax ‘target / replacement / env // exception’.
• Improve documentation