Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Sebastian Engelke <sebastian.engelke@unige.ch>’
  
  Suggests or Enhances not in mainstream repositories:
    edmcr
  
  Found the following (possibly) invalid URLs:
    URL: https://www.bts.gov/
      From: man/flights.Rd
      Status: Error
      Message: Stream error in the HTTP/2 framing layer [www.bts.gov]: HTTP/2 stream 5 was not closed cleanly: INTERNAL_ERROR (err 2)
    URL: https://www.bts.gov/browse-statistical-products-and-data/bts-publications/airline-service-quality-performance-234-time
      From: man/flights.Rd
      Status: Error
      Message: Stream error in the HTTP/2 framing layer [www.bts.gov]: HTTP/2 stream 7 was not closed cleanly: INTERNAL_ERROR (err 2)

No changes to worse in reverse depends.