Update ruby-sinatra package to 1.3.1.

= 1.3.1 / Not Yet Released

* Support adding more than one callback to the stream object. (Konstantin
  Haase)

= 1.3.0 / 2011-09-30

* Added `stream` helper method for easily creating streaming APIs, Server
  Sent Events or even WebSockets. See README for more on that topic.
  (Konstantin Haase)

* If a HTTP 1.1 client is redirected from a different verb than GET, use 303
  instead of 302 by default. You may still pass 302 explicitly. Fixes AJAX
  redirects in Internet Explorer 9 (to be fair, everyone else is doing it
  wrong and IE is behaving correct). (Konstantin Haase)

* Added support for HTTP PATCH requests. (Konstantin Haase)

* Use rack-protection to defend against common opportunistic attacks.
  (Josh Lane, Jacob Burkhart, Konstantin Haase)

* Support for Creole templates, Creole is a standardized wiki markup,
  supported by many wiki implementations. (Konstanin Haase)

* The `erubis` method has been deprecated. If Erubis is available, Sinatra
  will automatically use it for rendering ERB templates. `require 'erb'`
  explicitly to prevent that behavior. (Magnus Holm, Ryan Tomayko, Konstantin
  Haase)

* Patterns now match against the escaped URLs rather than the unescaped
  version. This makes Sinatra confirm with RFC 2396 section 2.2 and RFC 2616
  section 3.2.3 (escaped reserved characters should not be treated like the
  unescaped version), meaning that "/:name" will also match `/foo%2Fbar`, but
  not `/foo/bar`. To avoid incompatibility, pattern matching has been
  adjusted. Moreover, since we do no longer need to keep an unescaped version
  of path_info around, we handle all changes to `env['PATH_INFO']` correctly.
  (Konstantin Haase)

* `settings.app_file` now defaults to the file subclassing `Sinatra::Base` in
  modular applications. (Konstantin Haase)

* Set up `Rack::Logger` or `Rack::NullLogger` depending on whether logging
  was enabled or not. Also, expose that logger with the `logger` helper
  method. (Konstantin Haase)

* The sessions setting may be an options hash now. (Konstantin Haase)

* Important: Ruby 1.8.6 support has been dropped. This version also depends
  on at least Rack 1.3.0. This means that it is incompatible with Rails prior
  to 3.1.0. Please use 1.2.x if you require an earlier version of Ruby or
  Rack, which we will continue to supply with bug fixes. (Konstantin Haase)

* Renamed `:public` to `:public_folder` to avoid overriding Ruby's built-in
  `public` method/keyword. `set(:public, ...)` is still possible but shows a
  warning. (Konstantin Haase)

* It is now possible to use a different target class for the top level DSL
  (aka classic style) than `Sinatra::Application` by setting
  `Delegator.target`. This was mainly introduced to ease testing. (Konstantin
  Haase)

* Error handlers defined for an error class will now also handle subclasses
  of that class, unless more specific error handlers exist. (Konstantin
  Haase)

* Error handling respects Exception#code, again. (Konstantin Haase)

* Changing a setting will merge hashes: `set(:x, :a => 1); set(:x :b => 2)`
  will result in `{:a => 1, :b => 2}`. Use `set(:x, {:a => 1}, true)` to
  avoid this behavior. (Konstantin Haase)

* Added `request.accept?` and `request.preferred_type` to ease dealing with
  `Accept` headers. (Konstantin Haase)

* Added `:static_cache_control` setting to automatically set cache control
  headers to static files. (Kenichi Nakamura)

* Added `informal?`, `success?`, `redirect?`, `client_error?`,
  `server_error?` and `not_found?` helper methods to ease dealing with status
  codes. (Konstantin Haase)

* Uses SecureRandom to generate default session secret. (Konstantin Haase)

* The `attachment` helper will set Content-Type (if it hasn't been set yet)
  depending on the supplied file name. (Vasiliy Ermolovich)

* Conditional requests on `etag` helper now work properly for unsafe HTTP
  methods. (Matthew Schinckel, Konstantin Haase)

* The `last_modified` helper does not stop execution and change the status code
  if the status code is something different than 200. (Konstantin Haase)

* Added support for If-Unmodified-Since header. (Konstantin Haase)

* `Sinatra::Base.run!` now prints to stderr rather than stdout. (Andrew
  Armenia)

* `Sinatra::Base.run!` takes a block allowing access to the Rack handler.
  (David Waite)

* Automatic `app_file` detection now works in directories containing brackets
  (Konstantin Haase)

* Exception objects are now passed to error handlers. (Konstantin Haase)

* Improved documentation. (Emanuele Vicentini, Peter Higgins, Takanori
  Ishikawa, Konstantin Haase)

* Also specify charset in Content-Type header for JSON. (Konstantin Haase)

* Rack handler names will not be converted to lower case internally, this
  allows you to run Sinatra with custom Rack handlers, like Kirk or Mongrel2.
  Example: `ruby app.rb -s Mongrel2` (Konstantin Haase)

* Ignore `to_ary` on response bodies. Fixes compatibility to Rails 3.1.
  (Konstantin Haase)

* Middleware setup is now distributed across multiple methods, allowing
  Sinatra extensions to easily hook into the setup process. (Konstantin
  Haase)

* Internal refactoring and minor performance improvements. (Konstantin Haase)

* Move Sinatra::VERSION to separate file, so it can be checked without
  loading Sinatra. (Konstantin Haase)

* Command line options now complain if value passed to `-p` is not a valid
  integer. (Konstantin Haase)

* Fix handling of broken query params when displaying exceptions. (Luke
  Jahnke)

(taca)