see commits

This reverts commit f6b76db8.

Decomposition and other stuff

Removed the iPCA functionality

Needs testing and verification. Needs the allowable decomposition methods

Particularly useful for clustering / analysis. Note: these classes have NOT been tested

Conflicts:
	pycroscopy/io/io_hdf5.py
	pycroscopy/io/translators/be_utils.py

DOC: make some of the docstrings conform with NumPy style

pycroscopy wrapper for clustering. Note: This class has NOT been tested

Moved the functions and fixed imports/calls in io

New helper functions that transform data from original type to real and vice versa added. Note - these functions have NOT been tested

See commit