* 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.
* Removing goog.arrays.equals() in blocks/procedures.js, with minor refactor.
* Replacing goog.dom.createDom() in blocks/procedures.js, blocks/variables.js, blocks/variables_dynamic.js, and blocks/loops.js.
* Making all blocks use the MSG colour values.
* Deprecating Blockly.Constants.Lists.HUE and similar constants.
* Removing deprecated Blockly.Blocks.lists.HUE constants.
* Allowing message references in the Block.setColour() parameter.
* Adding checking of older constants, ensuring they are not overwritten.
* variables_dynamic
* make test , and i18n
* Issue #1470
* Blockly.Constants.VariablesDynamic.CUSTOM_CONTEXT_MENU_VARIABLE_MUTATION
to make sure setCheck before event trigger
* Update built files from develop.
* fix copyright ,quotes , comments , and optimize some flow.
* quotes，change UI , change category custom name
* single setter , remove mutator , colour typo , typed variables create button message
* undo the indent edits.
