4.1.2

Fixes

• fix default_value /implicit_value of type unsigned int cause logic error
• use istringstream for parsing
• fix case with short options only

4.1.1

Fixes

• parse key-value with value_parser
• do not store empty key

4.1.0

Fixes and features

• parse all integer types to uint64 and when check for overflow; reduce code size
• show expected type in 'failed to parse' message
• customizable parser and vector delimiter

4.0.0

Breaking changes

• all classes have been renamed to lowercase to match the std convention
• part of the code has been moved to .cpp

Fixes and features

• allow an empty string to be valid positional arguments
• fix empty option name in option_error
• support parsing value from ENV variable
• allow '?' in the short option name
• ability to stop parsing on the first positional argument
• do not silently consume any option as a value of another option