[jgrapht-users] please welcome our newest committer

[John S. <js...@gm...>]

We've been receiving a lot of significant contributions from Semen Chudakov
over the last year and a half, so we're very happy to announce that we're
adding him as a committer on the project (joining me, Joris, Dimitrios, and
Timofey).  This means if you submit a pull request, he may be one of your
reviewers helping you get it ready for merge.