Extend the 1.10 release notes with a subsection about using LZ4 compression over the wire. For now, only document the negotiation and choice of the compression algorithm for http://, and leave a TODO about svn://.
* docs/release-notes/1.10.html (LZ4 compression): Extend the opener with the information that LZ4 compression is supported for both http:// and svn://. (LZ4 compression over the wire in http:// and svn:// connections): New subsection. (New Feature Compatibility Table): Link to the new subsection.