Upgrade redcarpet, yard, and rest-client

This closes #50, #51, and #53

Gemfile.lock

@@ -14,13 +14,24 @@ GEM
       thor
     diff-lcs (1.2.5)
     docile (1.1.3)
+    domain_name (0.5.20190701)
+      unf (>= 0.0.5, < 1.0.0)
+    http-accept (1.7.0)
+    http-cookie (1.0.5)
+      domain_name (~> 0.5)
     http_parser.rb (0.6.0)
-    mime-types (2.1)
+    mime-types (3.4.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2022.0105)
     multi_json (1.8.4)
+    netrc (0.11.0)
     rake (10.1.1)
-    redcarpet (3.1.1)
-    rest-client (1.6.7)
-      mime-types (>= 1.16)
+    redcarpet (3.5.1)
+    rest-client (2.1.0)
+      http-accept (>= 1.7.0, < 2.0)
+      http-cookie (>= 1.0.2, < 2.0)
+      mime-types (>= 1.16, < 4.0)
+      netrc (~> 0.8)
     rspec (2.14.1)
       rspec-core (~> 2.14.0)
       rspec-expectations (~> 2.14.0)
@@ -38,7 +49,12 @@ GEM
       tins (~> 1.0)
     thor (0.18.1)
     tins (1.0.0)
-    yard (0.8.7.6)
+    unf (0.1.4)
+      unf_ext
+    unf_ext (0.0.8.2)
+    webrick (1.7.0)
+    yard (0.9.28)
+      webrick (~> 1.7.0)
 
 PLATFORMS
   ruby
@@ -52,3 +68,6 @@ DEPENDENCIES
   rspec
   simplecov
   yard
+
+BUNDLED WITH
+   2.1.4