v0.2.4

What's Changed

• Some pages of the documentation have been improved. by @tobiasraabe in #279 and #281
• Don't display traceback with 'previous task failed' with verbose <= 1. by @tobiasraabe in #285
• Show all files that are not produced by a task. by @tobiasraabe in #287

Full Changelog: v0.2.3...v0.2.4