Update to permit multiple root dirs

[CBroz1]

Changed:

• Updated mosts tests with docstrings.
• PEP8
  • line length to ≤ 88
  • removed unused dependencies
  • full words in variable/function names
• Include element-interface.utils path functions
• Rebased with main commit history
• Added verbose boolean to integration tests for simpler output
• Changed docker.test command for more complete coverage test output

Pending:

• Successful docker integration tests

[CBroz1]

• I believe the djarchive-manifest.csv file will need to be within <bucket>/workflow-array-ephys-benchmark/0.1.0a4/.
• The djarchive-manifest.csv file will need to be updated for the new subdirectories (workflow_ephys_data1, workflow_ephys_data2).
• Let's rename the revision 0.1.0a4 to v2.

I've added the manifest file, but will hold off on renaming pending dev request #20.

I've also changed tests/__init__.py to reflect the hardcoded v2 versioning for this test dataset.

[kabilar]

Thanks @CBroz1. Great work. Few suggestions above. We are close to merging!

[kabilar]

Thanks @CBroz1!