Added

• added 'tsx' file extension for stand-alone executable subcommands (#1368)
• documented second parameter to .description() to describe command arguments (#1353)
• documentation of special cases with options taking varying numbers of option-arguments (#1332)
• documentation for terminology (#1361)

Fixed

• add missing TypeScript definition for `.addHelpCommand()' (#1375)
• removed blank line after "Arguments:" in help, to match "Options:" and "Commands:" (#1360)

Changed

• update dependencies