0.3.0

This update comes with massive style changes.

• Make space for a left and right sidebar
• Move site navigation to the top bar for all devices
• Make the site responsive and mobile-friendly
• Fix some accessibility issues
• Improve performance of animations
• Add background grid animation
• Put the header in a window
• Switch to a grid-based layout on sufficiently large devices
• Change horizontal rules to be an animated rainbow

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