httr2 0.2.0

New features

• req_body_form(), req_body_multipart(), and req_url_query() now
  support multiple arguments with the same name (#97, #107).

• req_body_form(), req_body_multipart(), now match the interface of
  req_url_query(), taking name-value pairs in .... Supplying a single
  list() is now deprecated and will be removed in a future version.

• req_body_json() now overrides the existing JSON body, rather than
  attempting to merge with the previous value (#95, #115).

• Implement req_proxy() (owenjonesuob, #77).

Minor improvements and bug fixes

• httr_path class renamed to httr2_path to correctly match package name
  (#99).

• oauth_flow_device() gains PKCE support (@flahn, #92), and
  the interactive flow is a little more user friendly.

• req_error() can now correct force successful HTTP statuses to fail (#98).

• req_headers() will now override Content-Type set by req_body_*() (#116).

• req_throttle() correctly sets throttle rate (@jchrom, #101).

• req_url_query() never uses scientific notation for queries (#93).

• req_perform() now respects httr::with_verbose() (#85).

• response() now defaults body to raw(0) for consistency with real
  responses (#100).