diff --git a/package.json b/package.json
index d5ba2f4..667f17c 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "bluebird": "^3.5.5",
     "classnames": "^2.2.6",
     "codecov": "^3.5.0",
-    "gatsby": "^2.7.1",
+    "gatsby": "^2.7.5",
     "gatsby-link": "^2.1.1",
     "gatsby-plugin-catch-links": "^2.0.15",
     "gatsby-plugin-feed": "^2.2.1",
@@ -55,11 +55,11 @@
     "gatsby-plugin-offline": "^2.1.1",
     "gatsby-plugin-react-helmet": "^3.0.12",
     "gatsby-plugin-sass": "^2.0.11",
-    "gatsby-plugin-sharp": "^2.1.1",
+    "gatsby-plugin-sharp": "^2.1.2",
     "gatsby-plugin-sitemap": "^2.1.0",
     "gatsby-remark-autolink-headers": "^2.0.16",
-    "gatsby-remark-copy-linked-files": "^2.0.12",
-    "gatsby-remark-images": "^3.0.13",
+    "gatsby-remark-copy-linked-files": "^2.0.13",
+    "gatsby-remark-images": "^3.0.14",
     "gatsby-remark-katex": "^3.0.4",
     "gatsby-remark-prismjs": "^3.2.9",
     "gatsby-remark-relative-images": "^0.2.2",
@@ -67,7 +67,7 @@
     "gatsby-remark-smartypants": "^2.0.9",
     "gatsby-source-filesystem": "^2.0.37",
     "gatsby-transformer-remark": "^2.3.12",
-    "gatsby-transformer-sharp": "^2.1.19",
+    "gatsby-transformer-sharp": "^2.1.20",
     "invariant": "^2.2.4",
     "katex": "^0.10.2",
     "lodash": "^4.17.11",
diff --git a/yarn.lock b/yarn.lock
index 0edbe24..add14ad 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3036,6 +3036,17 @@ codecov@^3.5.0:
     teeny-request "^3.11.3"
     urlgrey "^0.4.4"
 
+codemirror-graphql@^0.7.1:
+  version "0.7.1"
+  resolved "https://registry.yarnpkg.com/codemirror-graphql/-/codemirror-graphql-0.7.1.tgz#64b995643d511b9aa8f85eeeb2feac7aeb4b94d4"
+  dependencies:
+    graphql-language-service-interface "^1.3.2"
+    graphql-language-service-parser "^1.2.2"
+
+codemirror@^5.26.0:
+  version "5.47.0"
+  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.47.0.tgz#c13a521ae5660d3acc655af252f4955065293789"
+
 collapse-white-space@^1.0.0, collapse-white-space@^1.0.2:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/collapse-white-space/-/collapse-white-space-1.0.5.tgz#c2495b699ab1ed380d29a1091e01063e75dbbe3a"
@@ -5562,9 +5573,9 @@ fuzzy@^0.1.1:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/fuzzy/-/fuzzy-0.1.3.tgz#4c76ec2ff0ac1a36a9dccf9a00df8623078d4ed8"
 
-gatsby-cli@^2.6.2:
-  version "2.6.2"
-  resolved "https://registry.yarnpkg.com/gatsby-cli/-/gatsby-cli-2.6.2.tgz#d3c74e324afdc604e86caab8ab6c62c33d4a4df4"
+gatsby-cli@^2.6.3:
+  version "2.6.3"
+  resolved "https://registry.yarnpkg.com/gatsby-cli/-/gatsby-cli-2.6.3.tgz#591608d893ad20f0ad48711b33e3e4d3cdcb6190"
   dependencies:
     "@babel/code-frame" "^7.0.0"
     "@babel/runtime" "^7.0.0"
@@ -5604,6 +5615,17 @@ gatsby-cli@^2.6.2:
     ink "^2.0.5"
     ink-spinner "^3.0.1"
 
+gatsby-graphiql-explorer@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/gatsby-graphiql-explorer/-/gatsby-graphiql-explorer-0.1.1.tgz#5d0533764bc33f8bbba19b43ef4cba46216026d6"
+  dependencies:
+    "@babel/runtime" "^7.0.0"
+    graphiql "^0.13.0"
+    graphiql-explorer "^0.3.7"
+    react "^16.8.6"
+    react-dom "^16.8.6"
+    whatwg-fetch "^3.0.0"
+
 gatsby-link@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/gatsby-link/-/gatsby-link-2.1.1.tgz#603326df8557720935f60eeffac3f60150d11eeb"
@@ -5708,9 +5730,9 @@ gatsby-plugin-sass@^2.0.11:
     "@babel/runtime" "^7.0.0"
     sass-loader "^7.0.1"
 
-gatsby-plugin-sharp@^2.1.1:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-sharp/-/gatsby-plugin-sharp-2.1.1.tgz#a282ead8575466d0ee01e88ff65f7b32838c800a"
+gatsby-plugin-sharp@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-sharp/-/gatsby-plugin-sharp-2.1.2.tgz#5cdb237f8b5258a327958349d74c5255f09877d1"
   dependencies:
     "@babel/runtime" "^7.0.0"
     async "^2.1.2"
@@ -5756,9 +5778,9 @@ gatsby-remark-autolink-headers@^2.0.16:
     mdast-util-to-string "^1.0.2"
     unist-util-visit "^1.3.0"
 
-gatsby-remark-copy-linked-files@^2.0.12:
-  version "2.0.12"
-  resolved "https://registry.yarnpkg.com/gatsby-remark-copy-linked-files/-/gatsby-remark-copy-linked-files-2.0.12.tgz#0c6596194575489d875151932b60587fef645fd5"
+gatsby-remark-copy-linked-files@^2.0.13:
+  version "2.0.13"
+  resolved "https://registry.yarnpkg.com/gatsby-remark-copy-linked-files/-/gatsby-remark-copy-linked-files-2.0.13.tgz#a406b752f15cf4190891674e1c5849242d6a5859"
   dependencies:
     "@babel/runtime" "^7.0.0"
     cheerio "^1.0.0-rc.2"
@@ -5769,9 +5791,9 @@ gatsby-remark-copy-linked-files@^2.0.12:
     probe-image-size "^4.0.0"
     unist-util-visit "^1.3.0"
 
-gatsby-remark-images@^3.0.13:
-  version "3.0.13"
-  resolved "https://registry.yarnpkg.com/gatsby-remark-images/-/gatsby-remark-images-3.0.13.tgz#65f5e27ec3be5a424e9a18a063c322af41e7f891"
+gatsby-remark-images@^3.0.14:
+  version "3.0.14"
+  resolved "https://registry.yarnpkg.com/gatsby-remark-images/-/gatsby-remark-images-3.0.14.tgz#b42a258bf55d70ace8f425a51cef9ad38103ac98"
   dependencies:
     "@babel/runtime" "^7.0.0"
     cheerio "^1.0.0-rc.2"
@@ -5896,9 +5918,9 @@ gatsby-transformer-remark@^2.3.12:
     unist-util-select "^1.5.0"
     unist-util-visit "^1.3.0"
 
-gatsby-transformer-sharp@^2.1.19:
-  version "2.1.19"
-  resolved "https://registry.yarnpkg.com/gatsby-transformer-sharp/-/gatsby-transformer-sharp-2.1.19.tgz#9edd635a7b3ad385695a7a05d103cfabfcfa5926"
+gatsby-transformer-sharp@^2.1.20:
+  version "2.1.20"
+  resolved "https://registry.yarnpkg.com/gatsby-transformer-sharp/-/gatsby-transformer-sharp-2.1.20.tgz#62729fba7983935f2818ab724308736a9fbb0297"
   dependencies:
     "@babel/runtime" "^7.0.0"
     bluebird "^3.5.0"
@@ -5908,9 +5930,9 @@ gatsby-transformer-sharp@^2.1.19:
     semver "^5.6.0"
     sharp "^0.22.1"
 
-gatsby@^2.7.1:
-  version "2.7.1"
-  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-2.7.1.tgz#39ca2e9c57f6fec794fbd2bec1e230b5b48b247c"
+gatsby@^2.7.5:
+  version "2.7.5"
+  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-2.7.5.tgz#039923ab9297f0351247f8aeba8986bc0023be45"
   dependencies:
     "@babel/code-frame" "^7.0.0"
     "@babel/core" "^7.0.0"
@@ -5968,7 +5990,8 @@ gatsby@^2.7.1:
     flat "^4.0.0"
     fs-exists-cached "1.0.0"
     fs-extra "^5.0.0"
-    gatsby-cli "^2.6.2"
+    gatsby-cli "^2.6.3"
+    gatsby-graphiql-explorer "^0.1.1"
     gatsby-link "^2.1.1"
     gatsby-plugin-page-creator "^2.0.13"
     gatsby-react-router-scroll "^2.0.7"
@@ -6411,6 +6434,18 @@ graceful-fs@^4.1.10, graceful-fs@^4.1.11, graceful-fs@^4.1.15, graceful-fs@^4.1.
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
 
+graphiql-explorer@^0.3.7:
+  version "0.3.7"
+  resolved "https://registry.yarnpkg.com/graphiql-explorer/-/graphiql-explorer-0.3.7.tgz#92f1c0860d6371754373cb5107db8672dc3ee381"
+
+graphiql@^0.13.0:
+  version "0.13.0"
+  resolved "https://registry.yarnpkg.com/graphiql/-/graphiql-0.13.0.tgz#8fcbfd25f73d84806ba6d3e8c96eac0a5bec8ab7"
+  dependencies:
+    codemirror "^5.26.0"
+    codemirror-graphql "^0.7.1"
+    markdown-it "^8.4.0"
+
 graphql-compose@^6.3.2:
   version "6.3.2"
   resolved "https://registry.yarnpkg.com/graphql-compose/-/graphql-compose-6.3.2.tgz#0eff6e0f086c934af950db88b90a6667f879c59b"
@@ -6418,6 +6453,16 @@ graphql-compose@^6.3.2:
     graphql-type-json "^0.2.4"
     object-path "^0.11.4"
 
+graphql-config@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/graphql-config/-/graphql-config-2.0.1.tgz#d34a9bdf1d7360af7b01db9b20260a342ddc7390"
+  dependencies:
+    graphql-import "^0.4.4"
+    graphql-request "^1.5.0"
+    js-yaml "^3.10.0"
+    lodash "^4.17.4"
+    minimatch "^3.0.4"
+
 graphql-config@^2.0.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/graphql-config/-/graphql-config-2.2.1.tgz#5fd0ec77ac7428ca5fb2026cf131be10151a0cb2"
@@ -6428,6 +6473,12 @@ graphql-config@^2.0.1:
     lodash "^4.17.4"
     minimatch "^3.0.4"
 
+graphql-import@^0.4.4:
+  version "0.4.5"
+  resolved "https://registry.yarnpkg.com/graphql-import/-/graphql-import-0.4.5.tgz#e2f18c28d335733f46df8e0733d8deb1c6e2a645"
+  dependencies:
+    lodash "^4.17.4"
+
 graphql-import@^0.7.1:
   version "0.7.1"
   resolved "https://registry.yarnpkg.com/graphql-import/-/graphql-import-0.7.1.tgz#4add8d91a5f752d764b0a4a7a461fcd93136f223"
@@ -6435,6 +6486,35 @@ graphql-import@^0.7.1:
     lodash "^4.17.4"
     resolve-from "^4.0.0"
 
+graphql-language-service-interface@^1.3.2:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/graphql-language-service-interface/-/graphql-language-service-interface-1.3.2.tgz#4bd5d49e23766c3d2ab65d110f26f10e321cc000"
+  dependencies:
+    graphql-config "2.0.1"
+    graphql-language-service-parser "^1.2.2"
+    graphql-language-service-types "^1.2.2"
+    graphql-language-service-utils "^1.2.2"
+
+graphql-language-service-parser@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/graphql-language-service-parser/-/graphql-language-service-parser-1.2.2.tgz#010c8a5fdfae4726c8e15714137eee822753d3ea"
+  dependencies:
+    graphql-config "2.0.1"
+    graphql-language-service-types "^1.2.2"
+
+graphql-language-service-types@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/graphql-language-service-types/-/graphql-language-service-types-1.2.2.tgz#078e0abc7936a593968c946a039502af136a9743"
+  dependencies:
+    graphql-config "2.0.1"
+
+graphql-language-service-utils@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/graphql-language-service-utils/-/graphql-language-service-utils-1.2.2.tgz#d31d4b4288085bd31d1bb8efc35790d69e496cae"
+  dependencies:
+    graphql-config "2.0.1"
+    graphql-language-service-types "^1.2.2"
+
 graphql-playground-html@1.6.12:
   version "1.6.12"
   resolved "https://registry.yarnpkg.com/graphql-playground-html/-/graphql-playground-html-1.6.12.tgz#8b3b34ab6013e2c877f0ceaae478fafc8ca91b85"
@@ -8429,6 +8509,12 @@ lie@3.1.1:
   dependencies:
     immediate "~3.0.5"
 
+linkify-it@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/linkify-it/-/linkify-it-2.1.0.tgz#c4caf38a6cd7ac2212ef3c7d2bde30a91561f9db"
+  dependencies:
+    uc.micro "^1.0.1"
+
 listenercount@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/listenercount/-/listenercount-1.0.1.tgz#84c8a72ab59c4725321480c975e6508342e70937"
@@ -8806,6 +8892,16 @@ markdown-escapes@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/markdown-escapes/-/markdown-escapes-1.0.3.tgz#6155e10416efaafab665d466ce598216375195f5"
 
+markdown-it@^8.4.0:
+  version "8.4.2"
+  resolved "https://registry.yarnpkg.com/markdown-it/-/markdown-it-8.4.2.tgz#386f98998dc15a37722aa7722084f4020bdd9b54"
+  dependencies:
+    argparse "^1.0.7"
+    entities "~1.1.1"
+    linkify-it "^2.0.0"
+    mdurl "^1.0.1"
+    uc.micro "^1.0.5"
+
 markdown-table@^1.1.0:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/markdown-table/-/markdown-table-1.1.2.tgz#c78db948fa879903a41bce522e3b96f801c63786"
@@ -13978,6 +14074,10 @@ ua-parser-js@^0.7.18:
   version "0.7.19"
   resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.19.tgz#94151be4c0a7fb1d001af7022fdaca4642659e4b"
 
+uc.micro@^1.0.1, uc.micro@^1.0.5:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/uc.micro/-/uc.micro-1.0.6.tgz#9c411a802a409a91fc6cf74081baba34b24499ac"
+
 uglify-js@3.4.x:
   version "3.4.10"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.4.10.tgz#9ad9563d8eb3acdfb8d38597d2af1d815f6a755f"
@@ -14639,7 +14739,7 @@ whatwg-fetch@2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz#dde6a5df315f9d39991aa17621853d720b85566f"
 
-whatwg-fetch@>=0.10.0:
+whatwg-fetch@>=0.10.0, whatwg-fetch@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-3.0.0.tgz#fc804e458cc460009b1a2b966bc8817d2578aefb"