bump grape

Gemfile

@@ -233,7 +233,7 @@ group :development, :test do
 end
 
 # API gems
-gem 'grape', '~> 0.17'
+gem 'grape', '~> 0.19.1'
 gem 'grape-cache_control', '~> 1.0.1'
 
 gem 'roar',   '~> 1.0.0'

Gemfile.lock

@@ -249,7 +249,6 @@ GEM
     docile (1.1.5)
     domain_name (0.5.20170223)
       unf (>= 0.0.5, < 1.0.0)
-    enumerable-lazy (0.0.1)
     equalizer (0.0.11)
     equivalent-xml (0.6.0)
       nokogiri (>= 1.4.3)
@@ -292,13 +291,13 @@ GEM
     gon (4.1.1)
       actionpack (>= 2.3.0)
       json
-    grape (0.17.0)
+    grape (0.19.1)
       activesupport
       builder
       hashie (>= 2.1.0)
       multi_json (>= 1.3.2)
       multi_xml (>= 0.5.2)
-      mustermann19 (~> 0.4.3)
+      mustermann-grape (~> 0.4.0)
       rack (>= 1.3.0)
       rack-accept
       virtus (>= 1.0.0)
@@ -306,7 +305,7 @@ GEM
       grape (~> 0.3)
     gravatar_image_tag (1.2.0)
     hashdiff (0.3.0)
-    hashie (3.4.6)
+    hashie (3.5.5)
     health_check (2.2.1)
       rails (>= 4.0)
     htmldiff (0.0.1)
@@ -346,9 +345,11 @@ GEM
     mixlib-shellout (2.1.0)
     multi_json (1.12.1)
     multi_test (0.1.2)
-    multi_xml (0.5.5)
-    mustermann19 (0.4.4)
-      enumerable-lazy
+    multi_xml (0.6.0)
+    mustermann (0.4.0)
+      tool (~> 0.2)
+    mustermann-grape (0.4.0)
+      mustermann (= 0.4.0)
     mysql2 (0.4.4)
     net-ldap (0.14.0)
     netrc (0.11.0)
@@ -552,6 +553,7 @@ GEM
     thread_safe (0.3.6)
     tilt (2.0.5)
     timecop (0.8.1)
+    tool (0.2.3)
     ttfunk (1.4.0)
     tzinfo (1.2.3)
       thread_safe (~> 0.1)
@@ -633,7 +635,7 @@ DEPENDENCIES
   fuubar (~> 2.2.0)
   globalize!
   gon (~> 4.0)
-  grape (~> 0.17)
+  grape (~> 0.19.1)
   grape-cache_control (~> 1.0.1)
   gravatar_image_tag (~> 1.2.0)
   health_check