Provide a 'Changelog' link on rubygems.org/gems/mini_portile #18

Job	Run time
downstream-re2-ubuntu-latest	1m 56s
downstream-re2-windows-latest	6m 0s
downstream-re2-macos-latest	1m 54s
downstream-nokogiri-ubuntu-latest	1m 22s
downstream-nokogiri-windows-latest	9m 36s
downstream-nokogiri-macos-latest	1m 8s
downstream-sqlite3-ubuntu-latest	1m 27s
downstream-sqlite3-windows-latest	4m 19s
downstream-sqlite3-macos-latest	1m 0s
	28m 42s

Provide feedback