Merge pull request #386 from GalSim-developers/#382

#382 - power spectrum estimator
Fix Python wrappers for matrix getters on shear, ellipse (#396)
Fixes for numpy1.7 API
Fix for icpc
Correct error in Bounds docstring #400
Add documentation about bounds & bounds operator #400
Merge pull request #397 from GalSim-developers/#396

Fix Python wrappers for matrix getters on shear, ellipse (#396)