* 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.
This commit adds a fallback when attempting to merge events that
collide on a hash but do not actually merge. Previously, the latter
event would be dropped.
This also fixes a minor UX problem where moving the isNull check into
the merging loop resulted in extra events in the undo queue that
served no purpose and required multiple undo operations without visual
feedback.
Fixes#1373
* Implement Blockly.Events.filter in linear time
For large App Inventor projects (order 1k+ blocks, 100+ top-level
blocks), the O(n^2) behavior of Blockly.Event.filter was causing
performance issues when rearranging blocks or pasting from the
backpack. This commit provides a linear merge implementation using a
key that uniquely identifies a block so that multiple events targeting
the same block are merged. This change benefits from O(1) amortized
lookup using an object as a key-value store.
* Add event filter unit tests and fix logic bugs
* Update Blockly.Events.filter unit tests
