Update to generate new experimental specific setting file exp_spec.yml.
Now pipeline.yml has to be generated separately.
[pipeline_demo] parse the CLI properly, w/ flags
Change statistic param calculation method name

... to statParamMethods
* timestream/manipulate/pipecomponents.py: Change to new method name
* timestream/manipulate/plantSegmenter.py: Likewise
Require skimage version greater than 0.10.1

* setup.py (install_requires): Require skimage version at install time.
* timestream/manipulate/plantSegmenter.py (compactness)
(eccentricity): Assume skimage version is greater than 0.10.1
Pots are half the dist between centers.

* timestream/manipulate/plantSegmenter.py (__init__): Change the size of pots
from 1/3 the distance between centers to 1/2.