RF: compare_* functions renamed to gen_*
NF: Add utils module
Merge pull request #9 from hoechenberger/rename

RF: compare_* functions renamed to gen_*
Merge branch 'master' into zero-padding

Conflicts:
	CHANGES.rst
BF: Support Python 2 and 3
DOC: Update example to reflect renamed function names
NF: Add utils module
BF: Support Python 2 and 3
Merge remote-tracking branch 'origin/zero-padding' into zero-padding
Merge pull request #10 from hoechenberger/zero-padding

Add zero-padding function (for participant IDs)
Merge branch 'master' into image-utils

Conflicts:
	CHANGES.rst
	pphelper/__init__.py
DOC: Formatting