Ezibpy

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- All Futures, Options and Options on Futures contracts are now set to ``m_includeExpired=True`` by default
- Handling ``tickSnapshotEnd`` event
- Misc code improvements and minor bug fixes
- Added ``getConId(contract_or_symbol_or_tickerId)`` method for getting contract's ``conId``
- Added support for combo orders

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- Added error code ``200`` to benign error codes (skip logging)

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- Brought back (accidently) deleted ``tif`` functionality (closing issue 5)

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- Added ``requestContractDetails()`` method for calling IB's ``reqContractDetails()``.
- Added container dict for contract details is stored in ``contract_details[tickerId]``
- Auto calls ``requestContractDetails()`` for every created contract
- Contract details is availeble via ``contract_details[tickerId]`` or ``contractDetails(contract_or_symbol_or_tickerId)``
- No need to pass ticksize to ``createTriggerableTrailingStop()`` or ``registerTriggerableTrailingStop()`` (auto-uses data from contract details)

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- ``createBracketOrder`` now passes ``tif`` to parent, target and stop child orders (closing issue 5)

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- Switch to standard python logging and log errors to ``stderr`` by default.
- Removed ``self.ibConn.register(self.handleErrorEvents, 'Error')`` so the code now calls this method from within ``handleServerEvents``
- Disabled error callback for benign error codes (``2104`` and ``2106`` are not actually problems)