CaCo v0.2.4: implementation of new simple metrics

CaCo v0.2.4
this release include bug fixes and the computes also these simple metrics:

• foliage cover
• canopy cover
• crown porosity

CaCo package for PyPI

CaCo can be easy installed using the PyPI repository.

CaCO is now working on Linux, Windows and Mac OS.

You can install CaCO indifferently on top of Python 2 or Python3.

The tutorial project is now attached to the release versions.

CaCo Interactive Command Line

First release of CaCo - Alpha version

CaCo implements an interactive Command Line Interface (CLI).

The CLI:

• allows a correct parameterization of CaCo
• saves and restores the user settings in the YAML format
• can restore the default settings
• runs the CaCo analysis

This version has a runnable test with two canopy photos.
The test is a simple implementation of the CaCo library that
performs the analysis directly, without the CLI.