New in 7.21.0

* Fix bug #59021
* Add headless test, which can be used by website developers to
test LibreJS-compliance of their website
* Fix license validation to check magnet link only for @license /
@license-end method
* Update documentation
* Fix complaint dialog close bug
(https://lists.gnu.org/archive/html/bug-librejs/2021-09/msg00002.html)
* Fix @license-end detection to detect accept /* */ comments (bug
#59533)
* Add CECILL-2.0 and zlib license (bug #50682 and #53221)
* Fix subresource integraty hash-busting bug (bug #62464 and #58131)

New in 7.20.3

* Fix build by updating json files
* Fix hanging on certain websites

Fixed a bug in the parser of WebLabel statements.