Error(s) in re-building vignettes:
--- re-building 'Compare-methods.Rmd' using rmarkdown
--- finished re-building 'Compare-methods.Rmd'

--- re-building 'Compare-node-supports.Rmd' using rmarkdown
Could not fetch http://www.zotero.org/styles/proceedings-of-the-royal-society-b
HttpExceptionRequest Request {
  host                 = "www.zotero.org"
  port                 = 80
  secure               = False
  requestHeaders       = []
  path                 = "/styles/proceedings-of-the-royal-society-b"
  queryString          = ""
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
 (ConnectionFailure Network.Socket.connect: <socket: 940>: failed (Connection timed out (WSAETIMEDOUT)))
Error: processing vignette 'Compare-node-supports.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building 'Compare-node-supports.Rmd'

--- re-building 'Conduct-analyses.Rmd' using rmarkdown
Could not fetch http://www.zotero.org/styles/proceedings-of-the-royal-society-b
HttpExceptionRequest Request {
  host                 = "www.zotero.org"
  port                 = 80
  secure               = False
  requestHeaders       = []
  path                 = "/styles/proceedings-of-the-royal-society-b"
  queryString          = ""
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
 (ConnectionFailure Network.Socket.connect: <socket: 952>: failed (Connection timed out (WSAETIMEDOUT)))
Error: processing vignette 'Conduct-analyses.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building 'Conduct-analyses.Rmd'

SUMMARY: processing the following files failed:
  'Compare-node-supports.Rmd' 'Conduct-analyses.Rmd'

Error: Vignette re-building failed.
Execution halted