select2boxes 8.x-1.0-alpha4

Important notice to those using Select2 Better Exposed Filters:

Select2 Better Exposed Filters now requires Better Exposed Filters version 8.x-4.0 or higher.
If you are using the submodule Select2 Better Exposed Filters you will need to update to a newer version of BEF and run update.php
Alternatives to preload entries in filter select form has been deprecated.
Alternatives to select several bundle types has been deprecated. If you need this features you can use this contrib project:
Views Entity Reference Filter
There is also a core issue get this feature into core:
#2429699: Add Views EntityReference filter to be available for all entity reference fields

Bugs:

#2996689: Auto-creation not working properly when preloading entities
#2996084: Undefined index: auto_create in line 32 AutoCreationProcessTrait.php
#2995184: Remove undefined indexes for BEF submodule config options
#2995066: Support BEF 'secondary options'
#3022577: Select2 Boxes is preventing modules/themes from altering attributes on auto-complete dropdowns
#3069958: Make Select2 work with jQuery ui dialog

Tasks:

#3005872: All dependencies must be prefixed
#3037531: Define configuration link
#3056158: Replace deprecated getVocabularyId
#3093779: Add new versions of select2 to dropdown
#3107674: Compatibility with BEF 4.x