Chrono is mainly written by Kang Seonghoon <public+rust@mearie.org>,
and also the following people (in ascending order):

Alex Mikhalev <alexmikhalevalex@gmail.com>
Alexander Bulaev <alexbool@yandex-team.ru>
Ashley Mannix <ashleymannix@live.com.au>
Ben Boeckel <mathstuf@gmail.com>
Ben Eills <ben@beneills.com>
Brandon W Maister <bwm@knewton.com>
Brandon W Maister <quodlibetor@gmail.com>
Cecile Tonglet <cecile.tonglet@cecton.com>
Colin Ray <r.colinray@gmail.com>
Corey Farwell <coreyf@rwell.org>
Dan <dan@ebip.co.uk>
Danilo Bargen <mail@dbrgn.ch>
David Hewson <dev@daveid.co.uk>
David Ross <daboross@daboross.net>
David Tolnay <dtolnay@gmail.com>
David Willie <david.willie.1@gmail.com>
Eric Findlay <e.findlay@protonmail.ch>
Eunchong Yu <kroisse@gmail.com>
Frans Skarman <frans.skarman@gmail.com>
Huon Wilson <dbau.pp+github@gmail.com>
Igor Gnatenko <ignatenko@redhat.com>
Jim Turner <jturner314@gmail.com>
Jisoo Park <xxxyel@gmail.com>
Joe Wilm <joe@jwilm.com>
John Heitmann <jheitmann@gmail.com>
John Nagle <nagle@sitetruth.com>
Jonas mg <jonasmg@yepmail.net>
János Illés <ijanos@gmail.com>
Ken Tossell <ken@tossell.net>
Martin Risell Lilja <martin.risell.lilja@gmail.com>
Richard Petrie <rap1011@ksu.edu>
Ryan Lewis <ryansname@gmail.com>
Sergey V. Shadoy <shadoysv@yandex.ru>
Sergey V. Galtsev <sergey.v.galtsev@github.com>
Steve Klabnik <steve@steveklabnik.com>
Tom Gallacher <tomgallacher23@gmail.com>
klutzy <klutzytheklutzy@gmail.com>
kud1ing <github@kudling.de>