Visitors   Views   Downloads
NOT PEER-REVIEWED
"PeerJ Preprints" is a venue for early communication or feedback before peer review. Data may be preliminary.

A peer-reviewed article of this Preprint also exists.

View peer-reviewed version

Additional Information

Competing Interests

Arfon M Smith is an employee of GitHub, Inc., San Francisco, California.

Author Contributions

Arfon M Smith wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Daniel S Katz wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Kyle E Niemeyer wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Data Deposition

The following information was supplied regarding data availability:

The research in this article did not generate, collect or analyse any raw data or code.

Funding

Work by D. S. Katz was supported by the National Science Foundation (NSF) while working at the Foundation. Work by K. E. Niemeyer was supported in part by the NSF under grant ACI-1535065. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


Add your feedback

Before adding feedback, consider if it can be asked as a question instead, and if so then use the Question tab. Pointing out typos is fine, but authors are encouraged to accept only substantially helpful feedback.

Some Markdown syntax is allowed: _italic_ **bold** ^superscript^ ~subscript~ %%blockquote%% [link text](link URL)
 
By posting this you agree to PeerJ's commenting policies