Log Message:
Update ruby-sinatra and ruby-sinatra-contrib to 2.0.0.

## 2.0.0 / 2017-04-10

 * Use Mustermann for patterns #1086 by Konstantin Haase

 * Server now provides `-q` flag for quiet mode, which disables start/stop \ 
messages #1153 by Vasiliy.

 * Session middleware can now be specified with `:session_store` setting #1161 \ 
by Jordan Owens.

 * `APP_ENV` is now preferred and recommended over `RACK_ENV` for setting \ 
environment #984 by Damien Mathieu.

 * Add Reel support #793 by Patricio Mac Adden.

 * Make route params available during error handling #895 by Jeremy Evans.

 * Unify `not_found` and `error` 404 behavior #896 by Jeremy Evans.

 * Enable Ruby 2.3 `frozen_string_literal` feature #1076 by Vladimir Kochnev.

 * Add Sinatra::ShowExceptions::TEMPLATE and patched Rack::ShowExceptions to \ 
prefer Sinatra template by Zachary Scott.

 * Sinatra::Runner is used internally for integration tests #840 by Nick Sutterer.

 * Fix case-sensitivity issue in `uri` method #889 by rennex.

 * Use `Rack::Utils.status_code` to allow `status` helper to use symbol as well \ 
as numeric codes #968 by Tobias H. Michaelsen.

 * Improved error handling for invalid params through Rack #1070 by Jordan Owens.

 * Ensure template is cached only once #1021 by Patrik Rak.

 * Rack middleware is initialized at server runtime rather than after receiving \ 
first request #1205 by Itamar Turner-Trauring.

 * Improve Session Secret documentation to encourage better security practices \ 
#1218 by Glenn Rempe

 * Exposed global and per-route options for Mustermann route parsing #1233 by \ 
Mike Pastore

 * Use same `session_secret` for classic and modular apps in development #1245 \ 
by Marcus Stollsteimer

 * Make authenticity token length a fixed value of 32 #1181 by Jordan Owens

 * Modernize Rack::Protection::ContentSecurityPolicy with CSP Level 2 and 3 \ 
Directives #1202 by Glenn Rempe

 * Adds preload option to Rack:Protection:StrictTransport #1209 by Ed Robinson

 * Improve BadRequest logic. Raise and handle exceptions if status is 400 #1212 \ 
by Mike Pastore

 * Make Rack::Test a development dependency #1232 by Mike Pastore

 * Capture exception messages of raised NotFound and BadRequest #1210 by Mike Pastore

 * Add explicit set method to contrib/cookies to override cookie settings #1240 \ 
by Andrew Allen

 * Avoid executing filters even if prefix matches with other namespace #1253 by \ 
namusyaka

 * Make `#has_key?` also indifferent in access, can accept String or Symbol \ 
#1262 by John Hope

 * Add `allow_if` option to bypass json csrf protection #1265 by Jordan Owens

 * rack-protection: Bundle StrictTransport, CookieTossing, and CSP #1267 by Mike \ 
Pastore

 * Add `:strict_paths` option for managing trailing slashes #1273 by namusyaka

 * Add full IndifferentHash implementation to params #1279 by Mike Pastore