v0.20.0

Changed

• [@http/route] introduced a cross-runtime staticRoute()
• [@http/route-deno] is now deprecated

Added

• [@http/fs] new package for filesystem based functions
• [@http/fs] added fileBody() as a cross-runtime way to turn a file into a
  Response body
• [@http/fs] added serveDir()/serveFile(), adapted from
  @std/http/file-server
• [@http/response] add responses required by serveDir/serveFile