Bigchaindb-driver

------------------
Changed
^^^^^^^
* In setup.py, changed python-rapidjson==0.6.0 to ~=0.6.0,
and changed requests>=2.11.0 to >=2.20.0

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Fixed
^^^^^
* Fixed the problem with a docs page (Handcrafting Transactions) that wouldn't build.

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Changed
^^^^^^^
* Added support for deterministic keypair generation from a 32-byte seed.
See pull request 487 by external contributor excerebrose
* Pinned cryptoconditions==0.8.0 in setup.py

Removed
^^^^^^^
* The send() function was removed. See pull request 483.

Known issues
^^^^^^^^^^^^
* Builds of the Handcrafting Transactions page started failing again,
in Travis CI and on ReadTheDocs.

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Changed
^^^^^^^
* Fixed a failing unit test
* Pinned cryptoconditions==0.7.2 in setup.py
* Fixed the Handcrafting Transactions page in the docs

-------------------
Added
^^^^^

* Cap exponential backoff depending on timeout value for reasonable waiting time in event of network recovery. `470 <https://github.com/bigchaindb/bigchaindb-driver/pull/470>`
* Update cryptoconditions dependency because of security vulnerability CVE-2018-10903. `472 <https://github.com/bigchaindb/bigchaindb-driver/pull/472>`

---------------------
Added
^^^^^

* Support for BigchainDB server v2.0.0.b5.
* added round-robin strategy to connect to nodes of the BigchainDB network `BEP 14 <https://github.com/bigchaindb/BEPs/tree/master/14>`_