Danny Wachsstock

The v flag for regexp's is now standard JavaScript

`commandCompletion` uses `trialCommand.substr(0,command.length)`. Should use `substring`.

I changed `element[exkey]` from a version string to a `Set` of event handlers, so I need another way to set the version number.

use xRegExp

1

[xRegExp](https://xregexp.com/) looks cool. I should allow using that in `bililiteRange.find.js`.

bililiteRange/test/prismeditor.html puts the insertion point at the end of "inner" languages like `` and `` elements. That seems to be a regression from bililiteRange version 2