* Rewrite ((_, x)->..) as ((, x)->...) as per @Nami-Doc.
* JSON has "null" not "undefined"
* Fix #26 and #32 by defaulting text to table-layout: fixed.
* Release 0.20130116.0
* Add HEXCODE() for @favonia
* First sketch at horizontal scaling
* Only connect to Redis for socket.io if we indeed have a redis server.
* Note that horizontal scaling relies on Redis
* 0.20130206.0
* Fix LiveScript syntax deprecation
* Add --cors flag for allowing cross-origin requests
* POST endpoints now accept only application/json.

  JSON was always supported, but we now explicitly reject
  regular form posts.

  Thanks to @kcwu and @favonia for pointing out a CSRF vector.
* 0.20130213.0 with --cors support and disabled form POST API.
* Speed up mousewheel scrolling proportionally.

  Thanks to @artem++ for the suggestion.
* Avoid error when peer cursor is on a cell that's gone
* Support column-only ranges such as =SUM(A:A) for @artem.
* Workaround #37 by making row count overflow to the left.
* Try fixing #36 using relative path for everything.
* Handle OPTIONS and webworker thread errors
* 0.20130325.0