v0.8.0

Added

• Subcommands and subcommand groups are supported by CommandModel and CreateCommand macros.
• Command option settings like max_value are validated when parsing command.

Changed

• Updated to twilight-model 0.8.0.
• CommandModel::from_interaction now takes a CommandInputData.
• Internal types have been moved to a separate module.
• Improved documentation.

Removed

• http feature has been removed.