• Update to 5.1
• Fix API deprecation warning

PR: 245066
Submitted by: Derek Schrock <dereks@lifeofadishwasher.com>
Approved by: maintainer timeout (changlp@cs.nctu.edu.tw, 25 days),

		ehaupt (mentor)

MFH: 2020Q2 (blanket)
Changelog: https://github.com/defunkt/gist/releases/tag/v5.1.0