Add global timeout for all operations within connection

[decaz]

Currently every operation should be called with timeout parameter to catch timeout of operations. With operation_timeout parameter of connection it would be much easier.

[decaz]

Default value of timeout parameters should be some special object (OPERATION_TIMEOUT for example) because None should mean no timeout at all. Will add it soon. Done.

[mosquito]

Please rebase

[decaz]

@mosquito done.

[mosquito]

Sorry for long answer, but why you want to add a parameter to the methods and use asyncio.wait_for inside them instead of wrapping asyncio.wait_for externally?

[decaz]

@mosquito because wait_for and timeout parameters are already inside library methods and you don't have to wrap them everywhere within your code.

[aviramha]

Update on this?

[mosquito]

please resolve conflicts