
We gratefully acknowledge contributions from Xavier Abulker, Toyin
Akin, James Battle, Christopher Baus, Thomas Becker, Adolfo Benin,
David Binderman, Jon Davidson, Daniele De Francesco, Matteo
Gallivanoni, Roman Gitlin, Tomoya Kawanishi, Gilbert Peffer, Walter
Penschke, Gianni Piolanti, Peter Schmitteckert, Maxim Sokolov, David
Schwartz, Joseph Wang, Bernd Johannes Wuebben, and Jeff Yu.
