* Add annotations to files under core/events
* Add annotations to files under core/interfaces
* Add annotations to files under core/keyboard_nav
* Add annotations to files under core/renderers
* Add annotations to files under core/serialization
* Add annotations to files under core/theme
* Add annotations to files under core/toolbox
* Add annotations to files under core/utils
* Add annotations to files under core
* Reexport Blockly.utils.* modules from Blockly.utils
* Update metadata (file sizes) again
blockly_compressed.js has gotten too big for the second time this
quarter. Update the expected file sizes for it so that tests
will continue to pass.
* Google changed from an Inc to an LLC.
This happened back in 2017 but we didn’t notice. Officially we should update files from Inc to LLC when they are changed as part of regular edits, but this is a nightmare to remember for the next decade.
* Remove project description/titles from licenses
This is no longer part of Google’s header requirements. Our existing descriptions were useless (“Visual Blocks Editor”) or grossly obselete (“Visual Blocks Language”).
* License no longer requires URL.
* Fix license regexps.
Instead of top/left/height/width. Given our uses of Rect, it makes the math slightly simpler.
This is a setup for using Rect in other places. Currently it is only used to describe delete areas.
