Options for writing files.
Fix docstring. Fix query range.
Merge pull request #40 from johnb30/feats

Adding features and working on docstrings.
Globally unique ID
Merge pull request #42 from johnb30/id

Not actually globally unique ID
Merge pull request #43 from myi100/master

docs
Merge pull request #44 from myi100/master

docs-flowchart
Add TOC to docs.
new_docs