Zappa

* Add `template` command
* Add `--json` in more places
* Add `--output` to package
* Support for manylinux wheels Python 3.6 package downloading 803
from nikbora
* Fix PyEnv exit code 799

* Add Python3 Support! 793, 6
* Deprecate `lets_encrypt_expression`
* Refactor a bunch of stuff to work with Python3 package restrictions >:[
* 776 fix for libmysqlclient.so.18 error when using `slim_handler`
* add profile and region detection to init - thanks pdpol
* 774 Wsgi environment improvements (Fix untrustworthy remote_addr)
* Only create `__init__.py` file if there are python files or sub dirs in the folder
* Update docs to reflect lambda name prepended to role_name
* Guard log responses (thanks scoates)

* Add Async Task Support! Lots of tickets and PRs related, including 61, 603, 694 and 732.
* More info here: https://blog.zappa.io/posts/zappa-introduces-seamless-asynchronous-task-execution
* Fix Django non-WSGI function initialization, 748
* Add support for AWS Lambda Dead Letter Queue, 740
* Fix API Gateway test button (the bolt button), 735
* Switch to using per-lambda-name (project-stage) rather than a single default LambdaExecutionRole

* Fix broken Let's Encrypt trying to use new ACM ARNs
* Add `apigateway_description` setting, fixes 722
* More aggressive virtualenvironment checking

* Add `certificate_arn` setting, support for AWS Certificate Manager (710)
* Fix zip permissions when building on Windows (714)
* Change the active working directory to `/tmp` when using the slim handler so that relative filepaths work. (711)

* Hotfix for broken Django deploys