Introducing plain-merge

🏷️ introduction plain-merge 🏷️ rubygems

Plain::Merge is the fallback for text without a richer parser. It divides content into blocks and scores similarity to support conservative merge decisions. It also registers the line-based text parser with TreeHaver, giving callers a common entry point for plain and structured formats.

Read the upstream README for installation and usage, or browse the project repository.