Merge pull request cakephp#505 from swiffer/2.x

Support for JSON Web Key Sets

Merge pull request cakephp#467 from RobertoRoos/feature/cookie_salt

Added the default option to add the application salt to the cookie

Merge pull request cakephp#500 from cakephp/2.next

Bump firebase/php-jwt to v5.5.

Merge pull request cakephp#501 from cakephp/jwt-auth-algos

Overwrite "algorithms" config instead of merging.

Merge pull request cakephp#449 from robertpustulka/identity-wrap-fix

Test passing identity instance to persistIdentity() and setIdentity()

Merge pull request cakephp#437 from cakephp/exception

Update AuthenticationRequiredException to extend HttpException.

Merge pull request cakephp#431 from cakephp/2.next

2.next

Merge branch '2.next'

Merge pull request cakephp#420 from cakephp/othercorey-patch-1

Add .github to export-ignore

Merge pull request cakephp#376 from GrandFelix/master

Use tokenField from config if defined