- Escalator should notify when an existing details row is moved to a new
index.
- Grid and DetailsManagerConnector should update their internal indexing
when details manager index changes in Escalator.

* Grid Editor: make Tab key skip read-only/disabled fields

Closes #11584

* Extracted DefaultEditorEventHandler.getDeltaFromKeyDownEvent() which allows for easy further Grid Editor customization

* Make DefaultEditorEventHandler.Delta public so that getDeltaFromKeyDownEvent() can be overridden

* Fixed exception in isEditable() if the widget was not a Field

* Refactored DefaultEditorEventHandler.Delta to CursorMoveDelta which expresses the intent more clearly

* Merge branch 'master' into master

* Grid editor: TAB now skips non-editable columns

Pressing TAB would shift the focus to non-editable cells when the Grid was in edit mode.
This patch makes DefaultEditorEventHandler to skip such columns.

Closes #10970

* Add tests

* Complete the empty since tag

- Multiple headers shouldn't stack behind each other.
- Body rows shouldn't get stuck to default row height.
- Compatibility version's hidable row selector shouldn't try to
calculate row heights based on rows that haven't been added to DOM yet.

Fixes #7674

Fixes #11028

Fixes #10942

* Fix spacebar handling

* @since 8.3.2

Fixes #10221

Also improve naming by replacing one-letter variable names.

Also use "event" as the name for events

* Variable names to conform to naming convention.

* Use static constants where it makes sense

* adds simple fix for missing label text in grid select checkboxes

* updated comment and wording

* Scheduler.ScheduledCommand and RepeatingCommand to be lambda

* Restore <table> in javadoc

* Fix docs

Also adds aria-selected for grid rows.

Also includes minor other javadoc and formatting fixes.

Fixes #9868

And remove unused imports.

Also includes some other minor cleanup.

Fixes #9832

Resolves #9372

This patch introduces a Tree component, implemented as a Composite
using TreeGrid. As initial version of the component, some functionality
of the old Tree component has been left out for now.

Partly addresses #8617

Refactors AbstractGridKeyEvent, AbstractGridMouseEvent and their
descendants to follow the pattern used in other GWT DomEvents.

Fixes #7633

It is possible to customize the drag data for each row. (#8706)

Fixes #8396

Fixes #8758

Synchronises parts of compatibility package code to match 7.7
Picks suitable patches for 8 code as well

* Add initial implementation of TreeGrid

* Refactor TreeGrid and related classes

* Fix potential class cast exception in TreeGrid#getDataProvider

* Add smoke tests for TreeGrid

* Add communication constants for TreeGrid

Use shared constant values for hierarchy data serialization and deserialization

* Fix event ordering in TreeGrid, add javadocs, keyboard navigation test

* TreeGrid improvements

* Add TreeGrid.getDataProvider to StateGetDoesNotMarkDirtyTest exclude list

* Merge remote-tracking branch 'github/master' into tree-grid

* Remove getEscalator override from TreeGrid

* Fix java packaging order (#106)

Closes vaadin/archetypes#113

* Use proper UTF-8 encoding for Content-Disposition filenames (#19527) (#6607)

* Enable changing the backing bean for BeanItem (#4302) (#77)

When storing a bean to the database, you typically get a new and updated
bean instance back. By allowing to change the bean instance, we make it
possible to just update the single BeanItem instance which can be used
in many places.

* Make AtmospherePushConnection methods public (#7973)

There is no sensible way to use a custom version of APC, so protected
access does not help in any way to access the underlying resource and/or
connected UI.

* Use correct indexes in multiselect checkboxes after removing rows (#8072)

Fixes #8011

* Fix removal of hidden Grid columns (#8071)

Fixes #8018

* Call error handler for exceptions in UI.init() (#8055)

Fixes #4995

* Render font icon correctly on the 'more' menu item (#8126)

* Render font icon correctly on the 'more' menu item

Fixes #8125

* Reopen Grid details on attach, fixes #8015 (#8074)

Fixes #8015

* Fix broken Grid tests after picking changes from 7.7.7

Removed duplicate setDetailsVisible calls from onDetach

* Correctly detach components in merged cells when a static row is removed (#8142)

Fixes #8140

* Migrate v7 Grid tests. Next round.

Fixes #8419

* Add Grid editor events.

Fixes #8202.