Updated date

Merge branch 'master' into release/0.21.4

[Releasing] 0.21.3

[Updating] changelog to include links to issues and contributors

Releasing 0.21.1

Releasing 0.21.0

Releasing 0.20.0

Releasing 0.20.0-0

Releasing 0.19.2

Fix link formatting in CHANGELOG.md to display PR number in parens as…

… link (axios#2643)