Bohrium

Removed the NumCIL frontend and updated the docs

**Release notes**
- Re-implementation of the C++ frontend
- Implemented profile context in Python e.g.:
Python
with bohrium.Profiling():
print bohrium.random.random(1000) * 42

- Implemented `correlate()` and `convolve()` (by Thorbjørn Koch)
- Implemented `argmin()` and `argmax()` for 1d arrays

**Release notes**
- Fixed a `lib64` issue (317)
- Fixed a `numpy.matlib` issue (319)
- Henceforth, the VERSION file has to be manually updated when creating new releases

**Release notes**
- Fixed a fatal bug when the version consist of three components.
- Fixed a segfault on shutdown when using OpenMP (mfherbst)

**Release notes**
- Added a CUDA backend (experimental)
- Added a VERSION file
- Clean up and Bug fixes

**Release notes**
- Added support of fancy indexing of multi dimension arrays
- Fixed BLAS & LAPACK dependencies in the Conda build (dionhaefner)
- Added Ubuntu 17.04 package build
- Now `bohrium.where()` handles `NaN` values (dionhaefner)
- Fixed the CG solver see 311 (dionhaefner)