editorial: _escapedList_ mixes code units and code points

[michaelficarra]

It'd probably be best to create a string through repeated string-concatenations and call UTF16EncodeCodePoint directly.

[ljharb]

Good catch.

Your suggestion tho seems more complex than either converting the code units into code points while adding them, for example.

[ljharb]

I think that this is fixed by #67. Will reopen if not.