0.7.0

💥 Breaking changes

• Removed deprecated Isbn::format(), use toFormattedString() instead
• Removed deprecated Isbn::isValidGroup(), use hasValidRegistrationGroup() instead
• Removed deprecated Isbn::isValidRange(), use isValid() instead
• Removed deprecated Isbn::getGroupIdentifier(), use getRegistrationGroup()->prefix, ->identifier and ->toString() instead
• Removed deprecated Isbn::getGroupName(), use getRegistrationGroup()->name instead
• Removed deprecated IsbnTools, use the Isbn class instead
• Removed deprecated IsbnGroup, use RegistrationGroup instead