Zappa

* Add confirm to `certify`
* Add `--manual` to `--certify`
* Fix `certify` for existing domains
* Add `extra_permissions` setting
* Add `shell` command

* Revert to Kappa 0.6.0 684 and others
* Add binary support for more HTTP methods, 696

* Add binary upload support, fix 683

* Add support for custom, non-Let's Encrypt certificates, thanks to Benjamin Congdon
* Change default permissions to allow executable binaries, 682
* Fix binary support for Django POST, 677

* Remove Kappa 0.6 specific hack
* Bring back '-' substitution

* Add automatic support for serving binary files! Via wobeng, closes 481
* Fixes `rollback` default back to 1 from 0, 673
* Ensure correct chmodding during package creation, 484
* Update regions that Zappa supports, 667
* Validate function names based on actual gateway rules 521
* Fix unschedule events with trimmed names 662
* Fix a few places where `extends` wasn't respecting `stage_config`, 655
* Begin to remove some dead code
* Dependency bumps