(doc) Add "similar projects" section.

[hastebrot]

List of similar projects.

Automerge

Automerge is a library of data structures for building collaborative applications in JavaScript.

• https://github.com/automerge/automerge
• https://github.com/automerge/automerge#example-usage
• https://news.ycombinator.com/item?id=16309533

Automerge is a so-called Conflict-Free Replicated Data Type (CRDT), which allows concurrent changes on different devices to be merged automatically without requiring any central server.

Immer

Create the next immutable state by mutating the current one

• https://github.com/mweststrate/immer