scmJS docs

Versions

The library's version is the editor's: @scm-js/core 0.9.0 reads and writes what scmJS 0.9.0 does, and the two are published together. A map written by the library opens in the editor of the same version without a warning, and the other way round.

The surface is what this page lists. A function stays once published; one that has to go is noted here first.