5.3.0
Remove leftover colon from comment from `main.css`
Fetch jQuery from jQuery's CDN instead of Google's
Change project architecture
Update to Modernizr 2.8.3
Minor fix: Use short version of shorthand for margin declaration in 404 template
Rename Apple touch icon & add <link> in index.html
Use `https://` where possible
Docs: Use `https://` where possible
Further losslessly compress images
