cwl-utils 0.3

add v1.1 parser @mr-c
add script to replace ExpressionTools with CommandLineTools @mr-c

cwl-utils 0.2

new utility: graph_split.py (a $graph splitter) @mr-c
docker_extract.py:
Allow to pull images with Singularity #4 @khillion
Support both Singularity 2.6.1 and 3.x
image_puller.py: Change replace charcter #9 @manabuishii

hello world

0.1

add some basic tests