Release Name: 0.7

Notes:
The big win in this release is that Ferret index corruption issues should now
be fixed, thanks to an extensive programming of locking and
thread-safety-adding.

The other nice change is that text entry will now scroll to the right upon
overflow, thanks to some arcane Curses magic that Steve Goldman discovered.

As always, this release includes many other bugfixes and enhancements.



Changes:
* Ferret index corruption issues fixed (hopefully!)
* Text entry now scrolls to the right on overflow, i.e. is actually usable
* Ctrl-C now asks user if Sup should die ungracefully
* Add a limit:<int> search operator to limit the number of results
* Added a --query option to sup-tweak-labels
* Added a new hook: shutdown
* Automatically add self as recipient on crypted sent messages
* Read in X-Foo headers
* Added global keybinding 'U' shows only unread messages
* As always, many bugfixes and tweaks