Filtering can be specified using an arbitrary number of -x (or --exclude)
parameters. The filtering works in a similar fashion to an inverted grep,
meaning that matched file names will be excluded from the generated
statistics.
The metrics module currently only includes a very simple ELOC (estimated lines
of code) metric, but will be expanded eventually with some other metrics.
If any missing files are detected during analysis, gitinspector reports them
in a list. If, on the other hand, the --checkout-missing option is supplied,
gitinspector will try to checkout any missing files instead.
