Update sentry-raven to 2.7.1

Gemfile

@@ -4,6 +4,6 @@ gem 'dotenv',             '~> 2.0.2'
 gem 'mrkt',               '~> 0.6.0'
 gem 'full-name-splitter', '~> 0.1.2'
 gem 'oj',                 '~> 2.17'
-gem 'sentry-raven',       '~> 0.15'
+gem 'sentry-raven',       '~> 2.7.0'
 gem 'sinatra',            '~> 1.4.6', require: 'sinatra/base'
 gem 'unicorn'

Gemfile.lock

@@ -16,8 +16,8 @@ GEM
     rack-protection (1.5.3)
       rack
     raindrops (0.15.0)
-    sentry-raven (0.15.6)
-      faraday (>= 0.7.6)
+    sentry-raven (2.7.1)
+      faraday (>= 0.7.6, < 1.0)
     sinatra (1.4.6)
       rack (~> 1.4)
       rack-protection (~> 1.4)
@@ -36,9 +36,9 @@ DEPENDENCIES
   full-name-splitter (~> 0.1.2)
   mrkt (~> 0.6.0)
   oj (~> 2.17)
-  sentry-raven (~> 0.15)
+  sentry-raven (~> 2.7.0)
   sinatra (~> 1.4.6)
   unicorn
 
 BUNDLED WITH
-   1.13.2
+   1.16.0

config.ru

@@ -3,7 +3,6 @@ require 'bundler'
 Bundler.require
 Dotenv.load(".env.#{ENV['RACK_ENV']}", '.env')
 
-
 if ENV['RAVEN_DSN']
   Raven.configure do |config|
     config.dsn = ENV['RAVEN_DSN']