unicorn 4.8.3 - the end of an era

This release updates documentation to reflect the migration of the
mailing list to a new public-inbox[1] instance.  This is necessary
due to the impending RubyForge shutdown on May 15, 2014.

The public-inbox address is: unicorn-public@bogomips.org
    (no subscription required, plain text only)
ssoma[2] git archives: git://bogomips.org/unicorn-public
browser-friendly archives: http://bogomips.org/unicorn-public/

Using, getting help for, and contributing to unicorn will never
require any of the following:

1) non-Free software (including SaaS)
2) registration or sign-in of any kind
3) a real identity (we accept mail from Mixmaster)
4) a graphical user interface

Nowadays, plain-text email is the only ubiquitous platform which
meets all our requirements for communication.

There is also one small bugfix to handle premature grandparent death
upon initial startup.  Most users are unaffected.

[1] policy: http://public-inbox.org/ - git://80x24.org/public-inbox
    an "archives first" approach to mailing lists
[2] mechanism: http://ssoma.public-inbox.org/ - git://80x24.org/ssoma
    some sort of mail archiver (using git)