Add mini-symposia selection criteria.
Add mailings directory and process-template.py.

For email templates.
Add mini-symposium chair request template.
Rename chair_request -> chair_invitation.
Add review board invitation mailing.
Draft Call for Submissions.
Draft initial conference announcement.
Draft the call for conference abstracts.
some announcement edits.
Merge pull request #1 from scopatz/mm-mailings

some announcement edits.
Merge pull request #1 from thewtex/mailings

Adding all the great content put together by Matt and Katy for announcements.
Tweaks to the conference announcement, including notes about the changes compared to past years and adding the deadline for papers submissions. Also added a description of what the mini-symposia are.
Added the entire board in the signature.
A few more tweaks and changed wording from reproducibility to reproducible science.
Merge pull request #3 from scipy/conf_ann_tweaks

Conference announcement tweaks
Add a list of mailing lists for announcements/call for submissions.
Merge pull request #5 from thewtex/mailing_lists

Add a list of mailing lists for announcements/call for submissions.
Community contact -> Communications
Merge pull request #6 from scopatz/master

very minor edits