Falconn

This release brings a few major changes in addition to fix several minor bugs:
* Python wrapper now uses pybind11 instead of SWIG, which makes it way more portable.
* We decouple query objects from the rest of the data structure. This allows to query the data structure from several threads. As a result, both C++ and Python APIs have been updated.

This minor release fixes a bug in the bit packed hash table (see 646b8f06a04e07de79c19f975fd3953b77389b92 and 6c0443bc0ea794751fe40b10ad8eb1215f8a389f for details).

The main point of this minor release is to fix the version of `swig` used for the PyPi package. However, along the way, we made several minor fixes to documentation and updated the versions of external libraries.

- New, more memory-efficient inner tables
- Multithreaded table setup
- Performance improvements (no sorting of candidates)


v1
First version of FALCONN!

This release contains the core C++ library with a convenient C++ wrapper interface. We have implemented hyperplane and cross-polytope LSH (both with multiprobe) for dense and sparse data.

- Added a Python wrapper (together with [docs](http://falconn-lib.org/pdoc/falconn/))
- Created a [pypi package](https://pypi.python.org/pypi/FALCONN) (can be readily installed via `pip install FALCONN`)
- Fixed a couple of bugs