Migrate from Jekyll to the Rust static site generator used by lfe.io

[oubiwann]

I think, ultimately -- for consistency and ease of management -- we should pull the blog.lfe.io content into lfe.io/blog. This will be a fairly large undertaking. Exploration is happening here:

• What would it take to migrate all the content in blog.lfe.io to lfe.io/blog? lfe.github.io#104

A full epic will be filled in here, once lfe/lfe.github.io#104 is complete:

• Migrate blog.lfe.io to lfe.io/blog lfe.github.io#105