Bug fixes

#3167394: Fix scheduling times.
#3164637: Allow for missing start/end fields.
#3120459: Some style changes.
#3117320: Remove unnecessary code.
#3116983; Drupal 9 Readiness

Fixes issue #3107227 by joy29: drupal 9 deprecated code report

• #3161989: The context is not a valid context

The following issues were fixed:

• Issue #3183400 by Anybody: PHP 7.4: Notice: Trying to access array offset on value of type bool in views_timelinejs_plugin_style_timelinejs->render()

IMPORTANT! Synonyms views filter and Synonyms views argument validator are moved into submodules

If you are using them in your views, please visit /admin/modules and install matching submodules. So that your views are not going to report broken handlers.

One change only in this release: