Issue #3142589 by jrockowitz: Use WebformSubmission::getLangcode instead of $webform_submission->langcode->value

Issue #3107468 by VVVi: [Drupal 8.8.x] Fix views.view.webform_submissions.yml config according Drupal 8.8 requirements

Issue #3137964 by jrockowitz: Make it easier to embed/share a webform on an external website using an iframe

Issue #3137892 by jrockowitz, pcambra: How to override method/action settings on variants/settings handler?

Issue #3137625 by jrockowitz, cpigott: Notice: Undefined index: messages in Drupal\webform\Plugin\WebformHandler\RemotePostWebformHandler->getCustomResponseMessage()

Issue #3085600 by jrockowitz: [Drupal 8.8.x+] Options sorting ability has been added to Select form element

Issue #3121005 by Berdir, jrockowitz, recrit: [Drupal 8.8.x] Replace use of deprecated file functions

Issue #3086352 by jrockowitz: [Drupal 8.8.x] Procedural function drupal_process_states() is deprecated

Issue #3133255 by jrockowitz: [Webform 8.x-5.x & 8.x-6.x] WebformExceptionHtmlSubscriber::onException should be compatible with HttpExceptionSubscriberBase::onException

Issue #3085557 by jrockowitz: [Drupal 8.8.x] The 'testing' install profile's setting of a default theme (Classy) is now deprecated

Issue #3120697 by Berdir: [Drupal 8.8.x] #pre_render callbacks must be implement TrustedCallbackInterface or RenderCallbackInterface

Issue #3085559 by jrockowitz, Upchuk, Berdir: [Drupal 8.8.x] Path aliases have been converted to revisionable entities

Issue #3136232 by jrockowitz: Overriding required message for select other only applies to original field

Issue #3136062 by jrockowitz, jibran: Element contains ignored/unsupported properties: #equal_stepwise_validate