Snakebids

- uses snakemakes configfile loader for json + yaml support
- wider range of configfile names supported, input path used for output, instead of hard-coded as config/snakebids.yml
- better yaml writing (no resorted keys, and no extra python ordereddict object strings cluttering the output)..
- adds tutorial to documentation

- previously was not taking `--participant_label` into account when pybids grabbing is skipped, ie when `--path_*` options are used
- releasing this for hcp-lifespan hippunfold processing

fixes the --help_snakemake option that was exiting poorly due to missing `import sys` and not able to sys.exit

- adds a logger for exceptions 38 (tkkuehn)
- fixes bug in filter_lists which was ordering randomly because of conversion to set 39, 41 (akhanf )
- fixes the template workflow to comply with boilerplate changes 40 (tkkuehn )

- note: version number got bumped a few times when debugging bumpversion/publish actions -- ultimately I couldn't get it working right, so for now will be disabling tagging with bumpversion (i.e. only use it for bumping the version, not committing a tag - since I couldn't get this to properly trigger the publish action), and we will rely on creating a github release to trigger the push to pypi

-integrates the cookiecutter into this repository and adds `snakebids-create` console script as a cookiecutter shortcut 37
-removes snakemake options from general help, adding `--help_snakemake` instead 36

- addition of --path_{type} option to specify inputs, as an alternative when inputs are not bids-ified
- note: if all inputs specified this way, then doesn't even use pybids
- can use suffix as a wildcard now too
- major refactoring and addition of documentation
- added test cases, workflows for linting, testing, deploying