Previously, config was implicitly required: if the user didn't supply any configuration, then convert_config was passed None and an error was raised. The intent, however, is for config to be optional, so if a user doesn't supply any configuration, then convert_config shouldn't be called.
Previously,
configwas implicitly required: if the user didn't supply any configuration, thenconvert_configwas passedNoneand an error was raised. The intent, however, is forconfigto be optional, so if a user doesn't supply any configuration, thenconvert_configshouldn't be called.Fixes #35