0.16.0

This release drops support for Swift 4.0/4.1 (#142) and is likely the last release to support Swift 4.2.

Added

• Allow setting the help command's description (#136). Thanks @Pyroh!
• Support Swift 4.2 (#137). Thanks @ikesyo!
• Support Swift 5.0 (#142). Thanks @norio-nomura!

Thank you to @mdiep, @ikesyo, @blender and @norio-nomura for reviewing pull requests!