.mailmap: Flesh out with Aron, Cath, Christina, Lex, Molly, Scott, ...
.mailmap: Flesh out with Aron, Cath, Christina, Lex, Molly, Scott, ...

... Steve, Trent, and Yuxi.

The previous two commits came from swcarpentry/boot-camps#9 and
swcarpentry/boot-camps#24.  This adds entries for other authors, as
far as I could determine from searching the GitHub and the wider net.

selimnairb/2014-02-25-swctest,selimnairb/2014-02-25-swctest,selimnairb/2014-02-25-swctest,selimnairb/2014-02-25-swctest,selimnairb/2014-02-25-swctest,selimnairb/2014-02-25-swctest