DynamicData RxJS

JavaScript adaptation of DynamicData (https://github.com/reactivemarbles/DynamicData),
MIT licensed, Copyright (c) Roland Pheasant 2011-2022.
Baseline commit: ef790af138811c3268c9bb687886c2acbd0b66c0 (10.0 preview).

Uses RxJS 7.8.2 (https://github.com/ReactiveX/rxjs), Apache-2.0 licensed.
The self-contained browser bundle includes RxJS. Its license is in docs/RXJS-LICENSE.txt.
