Deno 1.13 is one of the biggest releases to date - we're especially happy with stabilization of native HTTP server bindings. We plan to focus on squeezing the last bits of performance out of it in the coming weeks.
Personally I'm most excited about type checking example code in Markdown files. It's critical to keep your documentation up to date and doing so for code blocks embedded in JSDoc comments or Markdown files was very challenging. With this release we got you covered - just run "deno test --doc" on your codebase.