Changelog for Monadoro-0.2.1.5

monadoro (2.1.5) * Fix a spelling error in README. monadoro (2.1.4) * Fix package metadata. monadoro (2.1.3) * Fix package metadata. monadoro (2.1.2) * Complete the pattern list for the argument parser. monadoro (2.1.0) * Prune dependencies. monadoro (2.0.0) * Add option for a long (4-pomodoro) session. monadoro (1.0.0) * Initial release.