Make AsyncLiveClient Similar to LiveClient

[davidvonthenen]

Proposed changes

The LiveClient has been far more stable than the AsyncLiveClient. This makes both clients similar in flow by shifting the AsyncLiveClient to behave similarly to the LiveClient. The AsyncClient uses a more traditional recv() process for the listening thread which allows us know control paths and when certain signals are set. I simply could not get the initial refactoring of the AsyncClient first done in the v3 architecture mainly due to exception handling.

Changes:

• Fixed send() to return True/False. Every other language uses bytes returns except for Python. I totally forgot about this. This shouldn't be a big deal since no one was using the return type anyways.
• Added exception handling in send() so we don't need to have exception handling everywhere else. Since send() is either successful or not via exception. Just log it. If there is an error, the overall connection will throw an exception in one of the threads.
• A couple more None checks to explicitly state is not None in certain areas

Updated all examples to really hammer the clients this time around. Take a look at tests/edge_cases, which repeatedly connects/disconnects and reuses a single client in a loop without issue.

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update or tests (if none of the other choices apply)

Checklist

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• I have added tests that prove my fix is effective or that my feature works
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Further comments

NA