Do not throw exception  when interval not valid.
Do not allow to set window to full range for float/double.
Reduce the check: do not limit to min/max.
Do not use boolean == false.
Remove if return else return.
Set min max to 0, 255 for rgb image.
Add unint8 check.
Add check for null format.
Fix typo in pixel type.
Merge remote-tracking branch 'origin/develop' into rnd-rgb

Conflicts:
	components/server/src/ome/formats/OMEROMetadataStore.java
Flake8 populate_roi_test
Flake8 OmeroPy examples
Flake8 setup.py
Flake8 ez_setup.py
Move setup.cfg to top-level directory of OmeroPy
Exclude pytest from flake8
Flake8 OmeroPy in Travis
Flake8 OmeroFS setup.py
Flake8 OmeroFS ez_setup.py
Check OmeroFs via flake8 in Travis