According to the AWS documentation:
```
The HTTP status code will be in the 200 range for successful request.
For the RequestResponse invocation type this status code will be 200.
For the Event invocation type this status code will be 202.
For the DryRun invocation type the status code will be 204.
```
Python 3.8 will probably [raise SyntaxWarnings](https://docs.python.org/3/whatsnew/3.8.html#changes-in-python-behavior) on the flake8 F632 issue raised below.
[flake8](http://flake8.pycqa.org) testing of https://github.com/spulec/moto on Python 3.7.1
$ __flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics__
```
./tests/test_awslambda/test_lambda.py:1137:24: F632 use ==/!= to compare str, bytes, and int literals
assert len(messages) is 3
^
1 F632 use ==/!= to compare str, bytes, and int literals
1
```
* updates
- support lambda messages from SNS
- run lambda in docker container
* decode output
* populate timeout
* simplify
* whoops
* skeletons of cloudwatchlogs
* impl filter log streams
* fix logging
* PEP fixes
* PEP fixes
* fix reset
* fix reset
* add new endpoint
* fix region name
* add docker
* try to fix tests
* try to fix travis issue with boto
* fix escaping in urls
* fix environment variables
* fix PEP
* more pep
* switch back to precise
* another fix attempt
* fix typo
* fix lambda invoke
* fix more unittests
* work on getting this to work in new scheme
* fix py2
* fix error
* fix tests when running in server mode
* more lambda fixes
* try running with latest docker
adapted from aiodocker
* switch to docker python client
* pep fixes
* switch to docker volume
* fix unittest
* fix invoke from sns
* fix zip2tar
* add hack impl for get_function with zip
* try fix
* fix for py < 3.6
* add volume refcount
* try to fix travis
* docker test
* fix yaml
* try fix
* update endpoints
* fix
* another attempt
* try again
* fix recursive import
* refactor fix
* revert changes with better fix
* more reverts
* wait for service to come up
* add back detached mode
* sleep and add another exception type
* put this back for logging
* put back with note
* whoops :)
* docker in docker!
* fix invalid url
* hopefully last fix!
* fix lambda regions
* fix protocol
* travis!!!!
* just run lambda test for now
* use one print
* fix escaping
* another attempt
* yet another
* re-enable all tests
* fixes
* fix for py2
* revert change
* fix for py2.7
* fix output ordering
* remove this given there's a new unittest that covers it
* changes based on review
- add skeleton logs test file
- switch to docker image that matches test env
- fix mock_logs import
* add readme entry
