Faraday v0.16.0

This release also includes all the updates from RC-1.

Features:

• Create ParamPart class to allow multipart posts with JSON content and file upload at the same time #1017 (@jeremy-israel)
• Rename UploadIO -> FilePart to be consistent with ParamPart class name. #1021 (@technoweenie)
  • UploadIO class name is preserved for backwards compatibility.
• Enable response body streaming in Excon. #1026 (@technoweenie)

Bugs:

• Fix Faraday::Options#inspect bug that appends to a frozen string. #995 (@technoweenie)
• Fix Ruby 2.7 warnings about Proc.new without a block. #1009 (@tenderlove)

Misc:

• Fix website navigation links #995 (@iMacTia)
• Configure Jekyll plugin jekyll-remote-theme to support Docker usage. #999 (@Lewiscowles1986)
• Include test/unit and rspec examples using the Faraday Test adapter. #1000 (@technoweenie)
• Update multipart docs to mention ParamPart class #1018 (@technoweenie)