Add configuration file for Flow scheduler.
 Remove python wrapper for the Abinit parser
 Unit tests for XSF routines.
Merge pull request #16 from GkAntonius/master

InputVariable
 Add new options in setup.py to enable ipython and/or cython
Merge branch 'master' of https://github.com/gmatteo/abipy
 Add support for cython extensions in setup.py
 Tools for k-point meshes.
 New object EBands3d to symmetrize eigenvalues in the full BZ.
 Change abipy.data.pseudos so that we always return a PseudoTable instead of a list of strings.
 Add PAW-XML file for tests
 Simplify list of deps in requirements.txt (Travis build)
 Add script to understand why import netcdf4 fails in the Travis build.
 Unit tests for the Flows created by the run_* scripts.
 Remove obsolete Tester class.
 Require wmplot0.9.12 in setup.py (0.9.13 has not been release on PyPi)
 Tools needed for the computation of the character of the bands
 Tools I will need for the implementation of classify_bands in python
 Refactoring SpaceGroup
 More tools for bands classification.