update

Gemfile.lock

 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.2.7)
+    activesupport (4.2.7.1)
       i18n (~> 0.7)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
@@ -10,19 +10,19 @@ GEM
     addressable (2.4.0)
     bibtex-ruby (4.4.2)
       latex-decode (~> 0.0)
-    citeproc (1.0.3)
+    citeproc (1.0.4)
       namae (~> 0.8)
-    citeproc-ruby (1.1.2)
-      citeproc (>= 1.0.2, < 2.0)
+    citeproc-ruby (1.1.4)
+      citeproc (>= 1.0.4, < 2.0)
       csl (~> 1.4)
     coderay (1.1.1)
     colorator (1.1.0)
     colored (1.2)
-    csl (1.4.4)
+    csl (1.4.5)
       namae (~> 0.7)
     csl-styles (1.0.1.7)
       csl (~> 1.0)
-    ethon (0.9.0)
+    ethon (0.9.1)
       ffi (>= 1.3.0)
     ffi (1.9.14)
     forwardable-extended (2.6.0)
@@ -48,7 +48,7 @@ GEM
       safe_yaml (~> 1.0)
     jekyll-sass-converter (1.4.0)
       sass (~> 3.4)
-    jekyll-scholar (5.8.2)
+    jekyll-scholar (5.8.3)
       bibtex-ruby (~> 4.0, >= 4.0.13)
       citeproc-ruby (~> 1.0)
       csl-styles (~> 1.0)
@@ -56,7 +56,7 @@ GEM
     jekyll-watch (1.5.0)
       listen (~> 3.0, < 3.1)
     json (1.8.3)
-    kramdown (1.11.1)
+    kramdown (1.12.0)
     latex-decode (0.2.2)
       unicode (~> 0.4)
     liquid (3.0.6)
@@ -79,7 +79,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    rake (11.2.2)
+    rake (11.3.0)
     rb-fsevent (0.9.7)
     rb-inotify (0.9.7)
       ffi (>= 0.5.0)
@@ -106,4 +106,4 @@ DEPENDENCIES
   rake
 
 BUNDLED WITH
-   1.12.5
+   1.13.0