Stable but not what we really want. Tests run.

Needs a rewrite using numpy.memmap, and some fancy logic to allow implicit extending of files.
Think about it over the weekend.
conflict reduction
working up toward getting main FBF class replaced
more testing, still working on re-implementing FBF object
work in progress on FBF
much cleaner and simpler, still working on it
still debugging write test pattern
now debugging memmap expansion case
cleanups of _expose_idx, next we need memmap.resize to work
naive solution to expanding memory map
moved doctest patterns into unittests
cleanups and a few small bugfixes
fixes and basic Workspace self-test now passing
docs and more testing
addition of .append() including unit test passing in py33 and py27
append no longer requires opening of the file for reading. better test patterns
fixes and tests for mask array, index array, simple indexing
better truth for test patterns
Merge branch 'develop' into ifg_shis_transfer

Conflicts:
	pyfbf/numfbf.py
Added tests for slicer and fbf2dpl. Added tests_require to setup.py. Slicer now uses memfbf.
Fixed global QtApplication load in plots.py (still depends on ifg.plot package).