Enhancements

• Modify 'taxonomy_*' fields to return stored terms for non-post objects.

• Modify CMB2::get_sanitized_values() to return the sanitized 'taxonomy_*' field values. Also added "cmb2_return_taxonomy_values_{$cmb_id}" filter to modify if 'taxonomy_*' field values are returned. Fixes #538.

• Allow outputting CMB2 boxes/fields in additional locations in the post-editor.

  The new locations are: form_top, before_permalink, after_title, and after_editor

  These would be defined by setting the context property for your box:

  $cmb_demo = new_cmb2_box( array(
      ...
      'context' => 'before_permalink',
  ) );

  If it is preferred that the fields are output without the metabox, then omit the 'title' property from the metabox registration array, and instead add 'remove_box_wrap' => true,.

  Props @norcross (#836).

• New field parameter, 'render_class', allowing you to override the default 'CMB2_Type_Base' class that is used when rendering the field. This provides interesting object-oriented ways to override default CMB2 behavior by subclassing the default class and overriding methods. The render class can also be overridden with the "cmb2_render_class_{$fieldtype}" filter, which is passed the default render class name as well as the CMB2_Types object, but this should be used sparingly, and within the context of your project's boxes/fields or you could break other plugins'/themes' CMB2 fields.

• Improvements to the file/file_list fields javascript APIs, including using undersore templates.

• Small improvements to the styling for the file_list field type.

• New action hook, cmb2_footer_enqueue, which occurs after CMB2 enqueues its assets.

• Example functions clean up. Props @PavelK27 (#866).

• New CMB2_Utils methods, get_available_image_sizes() and get_named_size(). Props @Cai333.

Bug Fixes

• Fix datepicker month/year dropdown text color. On windows, the option text was showing as white (invisible). Fixes #770.
• Repeatable WYSIWYG no longer breaks if 'quicktags' param is set to false. Props @timburden (#797, #796).
• Do not process title fields during group field save process.
• Fix issue where term-meta values were not being displayed for some users. Props @sbussetti (#763, #700).
• Fix issue where term meta would not be applied when using the new term form if multiple object types were specified. Props @ADC07 (#842, #841).
• Fix WordPress spinner styling when boxes/fields used on the frontend.
• Fix issue where clicking to remove a file_list item could occasionally remove the field row. (#828).
• Fix issue where empty file field in group would still cause non-empty values to store to database. (#721).
• Make file/file_list field preview images work with named sizes. Props @Cai333 (#848, #844).
• Fix incorrect text-domain. (#798)
• Do not silence notices/errors in CMB2_Utils::get_file_ext().
• If title field type has no name value, then only output a span element (instead of a header element).