Update ruby-sinatra to 1.4.3.

= 1.4.3 / 2013-06-07

* Running a Sinatra file directly or via `run!` it will now ignore an
  empty $PORT env variable. (noxqsgit)

* Improve documentation. (burningTyger, Patricio Mac Adden,
  Konstantin Haase, Diogo Scudelletti, Dominic Imhof)

* Expose matched pattern as env["sinatra.route"]. (Aman Gupta)

* Fix warning on Ruby 2.0. (Craig Little)

* Improve running subset of tests in isolation. (Viliam Pucik)

* Reorder private/public methods. (Patricio Mac Adden)

* Loosen version dependency for rack, so it runs with Rails 3.2.
  (Konstantin Haase)

* Request#accept? now returns true instead of a truthy value. (Alan Harris)

= 1.4.2 / 2013-03-21

* Fix parsing error for case where both the pattern and the captured part
  contain a dot. (Florian Hanke, Konstantin Haase)

* Missing Accept header is treated like */*. (Greg Denton)

* Improve documentation. (Patricio Mac Adden, Joe Bottigliero)

= 1.4.1 / 2013-03-15

* Make delegated methods available in config.ru (Konstantin Haase)

= 1.4.0 / 2013-03-15

* Add support for LINK and UNLINK requests. (Konstantin Haase)

* Add support for Yajl templates. (Jamie Hodge)

* Add support for Rabl templates. (Jesse Cooke)

* Add support for Wlang templates. (Bernard Lambeau)

* Add support for Stylus templates. (Juan David Pastas, Konstantin Haase)

* You can now pass a block to ERb, Haml, Slim, Liquid and Wlang templates,
  which will be used when calling `yield` in the template. (Alexey Muranov)

* When running in classic mode, no longer include Sinatra::Delegator in Object,
  instead extend the main object only. (Konstantin Haase)

* Improved route parsing: "/:name.?:format?" with "/foo.png" now matches to
  {name: "foo", format: "png"} instead of {name: "foo.png"}. (Florian Hanke)

* Add :status option support to send_file. (Konstantin Haase)

* The `provides` condition now respects an earlier set content type.
  (Konstantin Haase)

* Exception#code is only used when :use_code is enabled. Moreover, it will
  be ignored if the value is not between 400 and 599. You should use
  Exception#http_status instead. (Konstantin Haase)

* Status, headers and body will be set correctly in an after filter when using
  halt in a before filter or route. (Konstantin Haase)

* Sinatra::Base.new now returns a Sinatra::Wrapper instance, exposing
  #settings and #helpers, yet going through the middleware stack on #call.
  It also implements a nice #inspect, so it plays nice with Rails' `rake
  routes`. (Konstantin Haase)

* In addition to WebRick, Thin and Mongrel, Sinatra will now automatically pick
  up Puma, Trinidad, ControlTower or Net::HTTP::Server when installed. The
  logic for picking the server has been improved and now depends on the Ruby
  implementation used. (Mark Rada, Konstantin Haase, Patricio Mac Adden)

* "Sinatra doesn't know this ditty" pages now show the app class when running
  a modular application. This helps detecting where the response came from when
  combining multiple modular apps. (Konstantin Haase)

* When port is not set explicitly, use $PORT env variable if set and only
  default to 4567 if not. Plays nice with foreman. (Konstantin Haase)

* Allow setting layout on a per engine basis. (Zachary Scott, Konstantin Haase)

* You can now use `register` directly in a classic app. (Konstantin Haase)

* `redirect` now accepts URI or Addressable::URI instances. (Nicolas
  Sanguinetti)

* Have Content-Disposition header also include file name for `inline`, not
  just for `attachment`. (Konstantin Haase)

* Better compatibility to Rack 1.5. (James Tucker, Konstantin Haase)

* Make route parsing regex more robust. (Zoltan Dezso, Konstantin Haase)

* Improve Accept header parsing, expose parameters. (Pieter van de Bruggen,
  Konstantin Haase)

* Add `layout_options` render option. Allows you, amongst other things, to
  render a layout from a different folder. (Konstantin Haase)

* Explicitly setting `layout` to `nil` is treated like setting it to `false`.
  (richo)

* Properly escape attributes in Content-Type header. (Pieter van de Bruggen)

* Default to only serving localhost in development mode. (Postmodern)

* Setting status code to 404 in error handler no longer triggers not_found
  handler. (Konstantin Haase)

* The `protection` option now takes a `session` key for force
  disabling/enabling session based protections. (Konstantin Haase)

* Add `x_cascade` option to disable `X-Cascade` header on missing route.
  (Konstantin Haase)

* Improve documentation. (Kashyap, Stanislav Chistenko, Zachary Scott,
  Anthony Accomazzo, Peter Suschlik, Rachel Mehl, ymmtmsys, Anurag Priyam,
  burningTyger, Tony Miller, akicho8, Vasily Polovnyov, Markus Prinz,
  Alexey Muranov, Erik Johnson, Vipul A M, Konstantin Haase)

* Convert documentation to Markdown. (Kashyap, Robin Dupret, burningTyger,
  Vasily Polovnyov, Iain Barnett, Giuseppe Capizzi, Neil West)

* Don't set not_found content type to HTML in development mode with custom
  not_found handler. (Konstantin Haase)

* Fix mixed indentation for private methods. (Robin Dupret)

* Recalculate Content-Length even if hard coded if body is reset. Relevant
  mostly for error handlers. (Nathan Esquenazi, Konstantin Haase)

* Plus sign is once again kept as such when used for URL matches. (Konstantin
  Haase)

* Take views option into account for template caching. (Konstantin Haase)

* Consistent use of `headers` instead of `header` internally. (Patricio Mac Adden)

* Fix compatibility to RDoc 4. (Bohuslav Kabrda)

* Make chat example work with latest jQuery. (loveky, Tony Miller)

* Make tests run without warnings. (Patricio Mac Adden)

* Make sure value returned by `mime_type` is a String or nil, even when a
  different object is passed in, like an AcceptEntry. (Konstantin Haase)

* Exceptions in `after` filter are now handled like any other exception.
  (Nathan Esquenazi)

(obache)