Update copyright year. [ci skip]
Tweak the page styles for legibility. [ci skip]
Update contribution guidelines. Closes #55.

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Generate a page for the contribution guidelines.

Clean up `build.js`. [ci skip]
Update the change log to v3.2.6. [ci skip]
Add a project page for the change log. [ci skip]
Link to issues in the generated change log.

[ci skip]