Figure out how to format the release announcement so a link isn't
directly followed by a period which would hinder cutand paste but uses
proper grammar and punctuation.
Announcements taken from https://github.com/ansible/community/wiki/RelEng:-ReleaseProcess
and then cleaned up:
* Update issue reporting blurb from feedback from acozine and gundalow
* Add a subject and to line for email output
* Ignore long line tests on the jinja templates (as jinja doesn't give
enough control to get rid of newlines when text wrapping)
* Skip shebang and compile tests for older pythons since this is a
release engineer-only script. (ok'd by mattclay)
