Drupal 9 Readiness

According to drupal-check, the module has no deprecation problem. So, indeed, we only need to update .info.yml file. But also in submodules like varnish_purge_tags.

Updated .info.yml file of module and submodules.

update the composer.json and revert th .info.yml

Composer require failed because of https://www.drupal.org/project/varnish_purge/issues/2845054.
however it applied successfully on my local machine

You need to remove the "core" line from the info file.

Thanks @aspilicious

Sorry for the wrong extension of interdiff file in #17

This is OK.

Hi,

Just checking to see if there is an aim to get this merged (and hopefully released?) prior to the release of D9 next week, and if there's anything we can do to help out?

We'd obviously prefer not to push out a Drupal9 version of our example project without varnish purging support.

Thanks for your hard work to date!

Thanks a lot, included in the new 8.2 release.

@littlethouhghts,
Any plans to release a new 8.x-1.x release with D9 compatibility?

Fixing the issue status.

@littlethoughts What is the reasoning to create a new major branch? It seems 8.x-1.x and 8.x-2.x are perfectly compatible.