Summary:
I gathered information from various sources in this newdoc entry.
The goal is to have an easy link that gives a general summary of what
Segmented Changelog is and what it does.
Reviewed By: quark-zju
Differential Revision: D25908322
fbshipit-source-id: 8f3d2725afe8db5a9bc179189c287fd54aaca08b
Summary:
In preparation for merging fb-mercurial sources to the Eden repository,
move everything from the top-level directory into an `eden/scm`
subdirectory.