Merge commit '0.2.0' into develop
Datablock: added scale property - get data array size doesn't load data
updated docstrings
Fixed some typos and PEP8
Allow giving a file object as argument for creating a FortranFile object
git now ignores .idea folder
added the datafield_backends package with a new iris backend (in development)
matplotlib's pylab or mayavi's mlab like interface (in development)
misc refactoring
new files added once again (PyCharm bug ?)
changed version to 0.3.0dev
ignore byte-compiled, optimized and dll files
removed .pyc files
fixed data values not loaded
added iris_tools module that contains a bunch of utility functions based on iris
deleted depreciated modules and move other modules or files
re-written utils modules
iris-related functions available in tools
re-written io modules (writing from built-in python data structures)
added a new version of CTM diagnostic API