v0.19.6

Features

• command: add noExit method (#282, #275) (bc0c5bb, ab38cc7)
• command: show long help with --help option (#281) (e577f5a)
• command: add usage method (#280) (a32755d)

Bug Fixes

• prompt: key symbols in prompt info are hardcoded (#274) (a6138b2)

Documentation Updates

• fix typos (#279) (d802a15)
• command: fix incorrectly import module (#276) (6674ea3)
• command: fix import path (#271) (57e7434)