Script to run tests on all past commits
Logging improvements
Move energy logging to separate method
log.with_level
Cleanup in linear observables
timer decorator
start using timer.with_section
BeckeMolGrid can be stored in HDF5
Fix division issues in iterstock found by Steven
Improve scripts output
Logger improvements
Fix compilation problem of libxc-2.0.2 with gfortran 4.8.x
Basic quadratic programming solver
Use new quadratic programing code in hirshfeld-e
SCF-DIIS solvers
rtransform: 2nd and 3rd direvatives, ditch baker
Cleanup of spline code

* get rid of copy_y and copy_d
* add attributes y, dx and dt
* rename ExponentialExtrapolation to CuspExtrapolation
Power law extrapolation of cubic splines
Improve accuracy of proatomic splines with density gradient
Clean up RTransform methods