Qtpylib

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- Fixed ``pip`` installer

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- Requires ezIBpy >= 1.12.45 (fixes a few open issues)

*December 31, 2016*

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- Misc bugfixes, code improvements, cleanup and abstraction

*December 30, 2016*

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- Bugfixes and code cleanup

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- Max of threads is set to 1 (single-threaded) by default and can be changed using the ``max_threads`` run-time parameter in ``Blotter()`` and ``Algo()``. **It's recommended that you set this parameter based on your strategy's needs and your machine's capabilities** (strategies trading a handful of symbols probably won't need to tweak this parameter).


*December 25, 2016*

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- Threading-related code improvements: ``tools.resample()`` syncs last timestamp of all symbols; ``add_stale_tick()`` checks for real tick with same index before triggering ``_tick_handler()``
- ``Instrument`` object not defaults to strategy's ``bar_window`` and ``tick_window`` if no window specified (to get full bar window, use ``instrument.get_bars()`` or simply ``instrument.bars``)

*December 22, 2016*