* 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.
Random improvements to require statements.
Removal of some obviously dead CSS.
.blocklyDropDownDiv no longer supresses text selection (see comment in PR).
This PR drops the compiled size by 4 KB, which is larger than I was expecting.
Clarifying the role of Blockly.Variables.createVariableButtonHandler(..).
Updating documentation a making sure it (and its deprecated previous name)
are properly exported.
* Don't require flyouts to run Blockly
There was a bug with Dynamic Variables that made them required for Blockly
to run. This adds checks so that the flyouts only get registered if they're
included. Also does a rebuild of core to pick up the fix.
* Also fix dependencies so dynamic vars don't get stripped
* 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.
