Update http-signatures version.
Fix spelling of "ignoring."

Closes #572.
Merge pull request #581 from bigeasy/ignoring

Fix spelling of "ignoring."
Merge pull request #544 from digitalbazaar/master

Update http-signature version.
global cookie jar disabled by default, send jar: true to enable.
2.22.0
2.22.1
Merge pull request #587 from threepointone/master

Global cookie jar disabled by default
Prevent setting headers after they are sent
Merge pull request #589 from wpreul/master

Prevent setting headers after they are sent
Merge remote-tracking branch 'upstream/master'