* 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.