Accordion.Panel not included in Accordion component

[Krystofee]

Bug Report

Accordion.Panel is not exported in Accordion component.

interface AccordionComponent extends React.ComponentClass<AccordionProps> {
  Accordion: typeof AccordionAccordion
  Content: typeof AccordionContent
  Title: typeof AccordionTitle
}

Possible fix

interface AccordionComponent extends React.ComponentClass<AccordionProps> {
  Accordion: typeof AccordionAccordion
  Content: typeof AccordionContent
  Panel: typeof AccordionPanel
  Title: typeof AccordionTitle
}

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[layershifter]

Thanks for reporting, fixed in #3995.