v0.2.4

• Fix arguments parsing order to respect the idx instruction
• Support --help with nested command
• Support for name: nil with #help
• Fix array arguments in usage line
• Fix #help generated by .add_commands to support nil and the command's doc
• Add a #parse(String) method

v0.2.3

• fix the error message when an argument's value is invalid

v0.2.2

• fix errors' message
• the generated subclass Help now inherits from Clip::Mapper::Help
• fix a bug when calling a command with subcommands without specifying any command
• fix the help usage for commands (note that the subclass Help is not a singleton now)

v0.2.1

• all errors inherit from Clip::Error
• all errors have a correct message
• document the --help flag in the help message
• add a command help when there is commands

v0.1.0

First public version.