Fix init script for proxy
Version bump
Fix bug with IOError in tornado-proxy when application sends error
run tornado-proxy with -O
Add PYTHONOPTIMIZE=x to init.script
Fix deprecated warning.
Stdout as primary log stream for tests.

- it helps to prevent stderr race in PyCharm debug window.
More verbose description of ChokeEvent.
Remove -O from tornado script. Cann't launch it on lucid
Default locator address now can be explicitly set.

* via command arguments
Future (actually, Deferred) are not thread safe.

Reasons are:
- otherwise this cause large performance overhead.
- there is no really need to use multiple threads.
- threads in Python suck.
Suppress debug log output.
Log mocking refactoring.
Merge branch 'master' of github.com:cocaine/cocaine-framework-python
Start chunk size changed.
Drop saving exception context.

* because it doesn't work properly anyway.
For optimization __debug__ statement is back!
More verbose FutureResult string representation.
Skip broken test.
Log messages revamped.