v2.19.2 (2016-12-08) Bug Fixes ZSH Completions: escapes square brackets in ZSH completions (7e17d5a3, closes #771) Documentation Examples: adds subcommand examples (0e0f3354, closes #766) README.md: adds guidance on when to use ~ in version pinning, and clarifies breaking change policy (591eaefc, closes #765)