diff --git a/package.json b/package.json
index e25b6c4..97a5fef 100644
--- a/package.json
+++ b/package.json
@@ -41,32 +41,32 @@
     "bluebird": "^3.7.2",
     "classnames": "^2.2.6",
     "codecov": "^3.6.1",
-    "gatsby": "^2.18.13",
+    "gatsby": "^2.18.16",
     "gatsby-link": "^2.2.27",
     "gatsby-plugin-catch-links": "^2.1.21",
     "gatsby-plugin-feed": "^2.3.25",
     "gatsby-plugin-flow": "^1.1.17",
     "gatsby-plugin-google-gtag": "^1.1.19",
-    "gatsby-plugin-manifest": "^2.2.33",
+    "gatsby-plugin-manifest": "^2.2.34",
     "gatsby-plugin-netlify": "^2.1.30",
     "gatsby-plugin-netlify-cms": "^4.1.33",
-    "gatsby-plugin-offline": "^3.0.29",
+    "gatsby-plugin-offline": "^3.0.30",
     "gatsby-plugin-optimize-svgs": "^1.0.3",
     "gatsby-plugin-react-helmet": "^3.1.18",
     "gatsby-plugin-sass": "^2.1.26",
-    "gatsby-plugin-sharp": "^2.3.9",
+    "gatsby-plugin-sharp": "^2.3.10",
     "gatsby-plugin-sitemap": "^2.2.24",
     "gatsby-remark-autolink-headers": "^2.1.21",
     "gatsby-remark-copy-linked-files": "^2.1.33",
     "gatsby-remark-external-links": "0.0.4",
-    "gatsby-remark-images": "^3.1.38",
+    "gatsby-remark-images": "^3.1.39",
     "gatsby-remark-katex": "^3.1.20",
-    "gatsby-remark-prismjs": "^3.3.27",
+    "gatsby-remark-prismjs": "^3.3.28",
     "gatsby-remark-relative-images": "^0.2.3",
     "gatsby-remark-responsive-iframe": "^2.2.30",
     "gatsby-remark-smartypants": "^2.1.19",
-    "gatsby-source-filesystem": "^2.1.42",
-    "gatsby-transformer-remark": "^2.6.43",
+    "gatsby-source-filesystem": "^2.1.43",
+    "gatsby-transformer-remark": "^2.6.45",
     "gatsby-transformer-sharp": "^2.3.9",
     "invariant": "^2.2.4",
     "katex": "^0.11.1",
diff --git a/yarn.lock b/yarn.lock
index eaba8cd..01cb8fd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6241,10 +6241,10 @@ fuzzy@^0.1.1:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/fuzzy/-/fuzzy-0.1.3.tgz#4c76ec2ff0ac1a36a9dccf9a00df8623078d4ed8"
 
-gatsby-cli@^2.8.19:
-  version "2.8.19"
-  resolved "https://registry.yarnpkg.com/gatsby-cli/-/gatsby-cli-2.8.19.tgz#91d70149a0293a8af970df8b65d307970030c990"
-  integrity sha512-cINizncxPBxL3tJAQVrVFCGrf/dFOFEk5o1uYr427zyLuC+jqaAtocE2AcT1P9ayXOEjyH4mP/INwaNfCbYkJg==
+gatsby-cli@^2.8.21:
+  version "2.8.21"
+  resolved "https://registry.yarnpkg.com/gatsby-cli/-/gatsby-cli-2.8.21.tgz#456277538b983545be5dc2ce036616f5a5b43fdf"
+  integrity sha512-lRf9xm9qa0Zzp6N/sfPXot01WLm6ABjREeKQgZ8pxNYngVZFtR3N51/+NIEY4VMEGvaALBanhAD5MiOcPYoiOQ==
   dependencies:
     "@babel/code-frame" "^7.5.5"
     "@babel/runtime" "^7.7.6"
@@ -6261,8 +6261,8 @@ gatsby-cli@^2.8.19:
     execa "^3.4.0"
     fs-exists-cached "^1.0.0"
     fs-extra "^8.1.0"
-    gatsby-core-utils "^1.0.24"
-    gatsby-telemetry "^1.1.44"
+    gatsby-core-utils "^1.0.25"
+    gatsby-telemetry "^1.1.46"
     hosted-git-info "^3.0.2"
     is-valid-path "^0.1.1"
     lodash "^4.17.15"
@@ -6289,10 +6289,10 @@ gatsby-cli@^2.8.19:
     ink "^2.6.0"
     ink-spinner "^3.0.1"
 
-gatsby-core-utils@^1.0.24:
-  version "1.0.24"
-  resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.24.tgz#b2b39440ad4f717de1b68f02d139130f844bdb32"
-  integrity sha512-2GPJVnqVTDO1xyZWR2lITilGTzw/hP3EE5Lq/QEjvmOPX6sLes1Gd3mTewd0PpOVZkjzn93u7kZKWEGidQO2vw==
+gatsby-core-utils@^1.0.25:
+  version "1.0.25"
+  resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.25.tgz#8cc8e76a79063c43ac06d9b72100b7c6f1fb5b60"
+  integrity sha512-Pz5xueweH9qv5TIW7wwlTxI/CbyzkiE5xvgLicbHbU+InH+lCNt4VuvGP1gQcIRuHMCIbuVKSiVCC7jnxEbtrA==
   dependencies:
     ci-info "2.0.0"
     node-object-hash "^2.0.0"
@@ -6313,16 +6313,16 @@ gatsby-link@^2.2.27:
     "@types/reach__router" "^1.2.6"
     prop-types "^15.7.2"
 
-gatsby-page-utils@^0.0.35:
-  version "0.0.35"
-  resolved "https://registry.yarnpkg.com/gatsby-page-utils/-/gatsby-page-utils-0.0.35.tgz#80ec1aea3078465be50d24b3fdfe9268238c100a"
-  integrity sha512-fZl8cnRqg1sUV9DDAOi66EPxPWmk/KZCE4bALWIy5xGVlPPZ8EHnwZZnoq23gBVUJN/tGkAdVlWlO/8uUZZ3QA==
+gatsby-page-utils@^0.0.36:
+  version "0.0.36"
+  resolved "https://registry.yarnpkg.com/gatsby-page-utils/-/gatsby-page-utils-0.0.36.tgz#348e5e30dfbbad8273dbd4a9705a57624520175e"
+  integrity sha512-W+9+PdEWKCxO5cEr8D3F0vyN2sDLeoSwROwiuO+J791HHUj+HgnDzRAt97WjBwcD4ghT+ONs5Ao2WyR+bVrIzw==
   dependencies:
     "@babel/runtime" "^7.7.6"
     bluebird "^3.7.2"
     chokidar "3.3.0"
     fs-exists-cached "^1.0.0"
-    gatsby-core-utils "^1.0.24"
+    gatsby-core-utils "^1.0.25"
     glob "^7.1.6"
     lodash "^4.17.15"
     micromatch "^3.1.10"
@@ -6362,13 +6362,13 @@ gatsby-plugin-google-gtag@^1.1.19:
     "@babel/runtime" "^7.7.6"
     minimatch "^3.0.4"
 
-gatsby-plugin-manifest@^2.2.33:
-  version "2.2.33"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-manifest/-/gatsby-plugin-manifest-2.2.33.tgz#4c9dafaffef8df452f863bc0af56f36c99b15388"
-  integrity sha512-J9u5Kmw8tY+BsSylred8KYRXDLTP3Rgz8EU7yNgfxGod+Qypm3x3laOz+hqLjWSVB4QyArlSss88Pqvyx7Rw4A==
+gatsby-plugin-manifest@^2.2.34:
+  version "2.2.34"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-manifest/-/gatsby-plugin-manifest-2.2.34.tgz#578ad8ef689f06564097649a941744ace25d4b27"
+  integrity sha512-Jo6fXZpJ/QSejrSj9BTfRNikVDjx9FuuKzT4w7il8I6qKtnM4z/lYOIMxRWkAdlK7dj+fpUlbTeClWjhlKRWAQ==
   dependencies:
     "@babel/runtime" "^7.7.6"
-    gatsby-core-utils "^1.0.24"
+    gatsby-core-utils "^1.0.25"
     semver "^5.7.1"
     sharp "^0.23.4"
 
@@ -6398,14 +6398,14 @@ gatsby-plugin-netlify@^2.1.30:
     lodash "^4.17.15"
     webpack-assets-manifest "^3.1.1"
 
-gatsby-plugin-offline@^3.0.29:
-  version "3.0.29"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-offline/-/gatsby-plugin-offline-3.0.29.tgz#514db6b950770b7ab2c1eacf435bfb16a45c1a16"
-  integrity sha512-5EJ6p6kIiOEjdI6NMHTC0GgXDj8QflV4dzYi/2BvcT4Ad609IbXRrebWPhcVCtT5Ki5Jg2TTjYjcGrHa4QSc6A==
+gatsby-plugin-offline@^3.0.30:
+  version "3.0.30"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-offline/-/gatsby-plugin-offline-3.0.30.tgz#6dcca79fa94568ff19336c70091b859b44749aca"
+  integrity sha512-aqv70nWayyjD88kre8mtDJ/AURQJYw8TScsqx9t+G64RgRtp/HTx5qVWdB9ab5NjJUjIFK474Lvjh9bpBPwTvg==
   dependencies:
     "@babel/runtime" "^7.7.6"
     cheerio "^1.0.0-rc.3"
-    gatsby-core-utils "^1.0.24"
+    gatsby-core-utils "^1.0.25"
     glob "^7.1.6"
     idb-keyval "^3.2.0"
     lodash "^4.17.15"
@@ -6419,15 +6419,15 @@ gatsby-plugin-optimize-svgs@^1.0.3:
     svgo "^1.3.0"
     walk "^2.3.14"
 
-gatsby-plugin-page-creator@^2.1.36:
-  version "2.1.36"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-page-creator/-/gatsby-plugin-page-creator-2.1.36.tgz#360a57ee252c99fcf7603067fc74a8bea322803b"
-  integrity sha512-NDfEUBCNtcaL6Jbn5akigNv93mt28KKpnOcnPYH2VB28JHPeJJlFfhy/hHlRYQ8UR2Q8WDd4JZBnKhJvEbvlzQ==
+gatsby-plugin-page-creator@^2.1.37:
+  version "2.1.37"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-page-creator/-/gatsby-plugin-page-creator-2.1.37.tgz#cfdcbbbe6cb9e347a0063714646be156e5959e44"
+  integrity sha512-EsHDgT4hQx9Zxqf6zUIP9qQh+0Wk1tPyiJtPRADY1jkzwu2dAidJkaUtH4XR8BExhjZ9xYB5uDliSNrGkZg7fw==
   dependencies:
     "@babel/runtime" "^7.7.6"
     bluebird "^3.7.2"
     fs-exists-cached "^1.0.0"
-    gatsby-page-utils "^0.0.35"
+    gatsby-page-utils "^0.0.36"
     glob "^7.1.6"
     lodash "^4.17.15"
     micromatch "^3.1.10"
@@ -6447,16 +6447,16 @@ gatsby-plugin-sass@^2.1.26:
     "@babel/runtime" "^7.7.6"
     sass-loader "^7.3.1"
 
-gatsby-plugin-sharp@^2.3.9:
-  version "2.3.9"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-sharp/-/gatsby-plugin-sharp-2.3.9.tgz#8c0febc808bf271be0556e0e2ab608b741056326"
-  integrity sha512-+SG6ZfoeMRC5AVDw1QpVrdHmOvuyJjTA+bcwvavDKbZoMsiDG5QdTDGgJogr0Ak9VBwOj0V3Y3cMpMoNtvEg6g==
+gatsby-plugin-sharp@^2.3.10:
+  version "2.3.10"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-sharp/-/gatsby-plugin-sharp-2.3.10.tgz#072acfcaf5de0eda21bbaf3e7d6e0cd891cac6b2"
+  integrity sha512-uoVLdSnnrnpWxeI+ZNdQ7nuvx60LI8+nqsuUu0KfyAmEhNgcuuExTDYlM4WDn1BCIifCylTwBBTP0xZU4YvPeA==
   dependencies:
     "@babel/runtime" "^7.7.6"
     async "^2.6.3"
     bluebird "^3.7.2"
     fs-extra "^8.1.0"
-    gatsby-core-utils "^1.0.24"
+    gatsby-core-utils "^1.0.25"
     got "^8.3.2"
     imagemin "^6.1.0"
     imagemin-mozjpeg "^8.0.0"
@@ -6526,15 +6526,15 @@ gatsby-remark-external-links@0.0.4:
     unist-util-find "^1.0.1"
     unist-util-visit "^1.1.3"
 
-gatsby-remark-images@^3.1.38:
-  version "3.1.38"
-  resolved "https://registry.yarnpkg.com/gatsby-remark-images/-/gatsby-remark-images-3.1.38.tgz#9e66ba43b3a0211f3a08167badc33bd7d0653bb3"
-  integrity sha512-eMEq3anD/cCgCh2ZgcWhR/ejvd25R1tki2bS3jLEl0ceafJbOGvWD1hpSDL/N9KtpsX2zyVOTZn56tg5oRhTrQ==
+gatsby-remark-images@^3.1.39:
+  version "3.1.39"
+  resolved "https://registry.yarnpkg.com/gatsby-remark-images/-/gatsby-remark-images-3.1.39.tgz#2488a10580993c877d56626b3347b9f63a5df494"
+  integrity sha512-9H8i1fV8JSWp4imqgbj6Vxamfi/+kTPfkpUtwvzKF9KWD2YEf0zWSm+yUEO/Zguf1WKL4C6AqK7axWjYyG7h6Q==
   dependencies:
     "@babel/runtime" "^7.7.6"
     chalk "^2.4.2"
     cheerio "^1.0.0-rc.3"
-    gatsby-core-utils "^1.0.24"
+    gatsby-core-utils "^1.0.25"
     is-relative-url "^3.0.0"
     lodash "^4.17.15"
     mdast-util-definitions "^1.2.5"
@@ -6552,10 +6552,10 @@ gatsby-remark-katex@^3.1.20:
     remark-math "^1.0.6"
     unist-util-visit "^1.4.1"
 
-gatsby-remark-prismjs@^3.3.27:
-  version "3.3.27"
-  resolved "https://registry.yarnpkg.com/gatsby-remark-prismjs/-/gatsby-remark-prismjs-3.3.27.tgz#dbd316c6ad91c48ada9459eee63cf9dfa2f34a7a"
-  integrity sha512-xuTUK1dYxU64RfVO1zpP8nLSQssVz6xn306vEJ3kDPikRGYrv0hx5zyK3j3k9OR7P1jUyC7YUsrObUsvrv+FHA==
+gatsby-remark-prismjs@^3.3.28:
+  version "3.3.28"
+  resolved "https://registry.yarnpkg.com/gatsby-remark-prismjs/-/gatsby-remark-prismjs-3.3.28.tgz#0ff3a2bdd9c73890faca6bdbf0420e2d76281b6f"
+  integrity sha512-EyuuDo221FlO2Ekb2QRjAcofKZ2InHJxalbWnocAbkZFsMRNsJ2jENjD4bgI8nSQnbdY3vyBeyHm8+owlJTtVw==
   dependencies:
     "@babel/runtime" "^7.7.6"
     parse-numeric-range "^0.0.2"
@@ -6595,10 +6595,10 @@ gatsby-remark-smartypants@^2.1.19:
     retext-smartypants "^3.0.3"
     unist-util-visit "^1.4.1"
 
-gatsby-source-filesystem@^2.1.42:
-  version "2.1.42"
-  resolved "https://registry.yarnpkg.com/gatsby-source-filesystem/-/gatsby-source-filesystem-2.1.42.tgz#422fb6452ce86859df8b2d8c9f6953e2b492eae6"
-  integrity sha512-kX1Uclv4M9C+MB6tfvY7URkpQ7Zl6+ESrf5DhcBN2+faaXLjaN7DzbWOlyzMI/lBlvA39ukCh9gSSlx807TJsA==
+gatsby-source-filesystem@^2.1.43:
+  version "2.1.43"
+  resolved "https://registry.yarnpkg.com/gatsby-source-filesystem/-/gatsby-source-filesystem-2.1.43.tgz#02652b41fcdd8999b2b2107edecdec8703273620"
+  integrity sha512-lmq64xMgHE6cXwLgddogcx2THPsMCia/HivWRGK6DCJhCOXDbkWSiNYthpMIgZXkfsGaYFiVjxRZSSn1QVOU9g==
   dependencies:
     "@babel/runtime" "^7.7.6"
     better-queue "^3.8.10"
@@ -6606,7 +6606,7 @@ gatsby-source-filesystem@^2.1.42:
     chokidar "3.3.0"
     file-type "^12.4.0"
     fs-extra "^8.1.0"
-    gatsby-core-utils "^1.0.24"
+    gatsby-core-utils "^1.0.25"
     got "^7.1.0"
     md5-file "^3.2.3"
     mime "^2.4.4"
@@ -6616,10 +6616,10 @@ gatsby-source-filesystem@^2.1.42:
     valid-url "^1.0.9"
     xstate "^4.7.2"
 
-gatsby-telemetry@^1.1.44:
-  version "1.1.44"
-  resolved "https://registry.yarnpkg.com/gatsby-telemetry/-/gatsby-telemetry-1.1.44.tgz#21932cfbed6eadfe4b2e97964c3d76ab835c6689"
-  integrity sha512-N8sx4ysLp3kCTuqhB+U6l84i/pIE7xqpbs8u3EyVovr05P7igM2asBIvw/VfOIddxNvb99fBjZbBm6BI1Sh6iA==
+gatsby-telemetry@^1.1.46:
+  version "1.1.46"
+  resolved "https://registry.yarnpkg.com/gatsby-telemetry/-/gatsby-telemetry-1.1.46.tgz#c44d196afa5e15ed7909af9ed5f3d869b684f3cd"
+  integrity sha512-HFrrZc/mZtzt2DsMc34HZiIEHpaXt1kKcFZC6s3Q3KqkgUweCZMwE7N52jkhGA+c3aFOZU/D+CtyP9dWcrsM/Q==
   dependencies:
     "@babel/code-frame" "^7.5.5"
     "@babel/runtime" "^7.7.6"
@@ -6628,7 +6628,7 @@ gatsby-telemetry@^1.1.44:
     configstore "^5.0.0"
     envinfo "^7.5.0"
     fs-extra "^8.1.0"
-    gatsby-core-utils "^1.0.24"
+    gatsby-core-utils "^1.0.25"
     git-up "4.0.1"
     is-docker "2.0.0"
     lodash "^4.17.15"
@@ -6639,14 +6639,14 @@ gatsby-telemetry@^1.1.44:
     stack-utils "1.0.2"
     uuid "3.3.3"
 
-gatsby-transformer-remark@^2.6.43:
-  version "2.6.43"
-  resolved "https://registry.yarnpkg.com/gatsby-transformer-remark/-/gatsby-transformer-remark-2.6.43.tgz#b45033ede57a8a47e813f2fe6350fc4695911e2e"
-  integrity sha512-Jlf9rg+LFUIyOu8py5LbGzisRBJTa7d0Fb/OncFyRUxPTfHkxwnnEtMO7e2rBX8ut9kELIKcS5o+sXywu6Nrhw==
+gatsby-transformer-remark@^2.6.45:
+  version "2.6.45"
+  resolved "https://registry.yarnpkg.com/gatsby-transformer-remark/-/gatsby-transformer-remark-2.6.45.tgz#e397371ac8f17d24627a247f466dde3a54c25f44"
+  integrity sha512-3oICZvZmQyecK+vGBpcLOuDMpJio2OsJEGnmEXlQuS0KOWALGvZCfu3sNu4ROHemEgwY8q5z7OANjqZVxIaloQ==
   dependencies:
     "@babel/runtime" "^7.7.6"
     bluebird "^3.7.2"
-    gatsby-core-utils "^1.0.24"
+    gatsby-core-utils "^1.0.25"
     gray-matter "^4.0.2"
     hast-util-raw "^4.0.0"
     hast-util-to-html "^4.0.1"
@@ -6679,10 +6679,10 @@ gatsby-transformer-sharp@^2.3.9:
     semver "^5.7.1"
     sharp "^0.23.4"
 
-gatsby@^2.18.13:
-  version "2.18.13"
-  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-2.18.13.tgz#b1c690a2936f92a65732ef0339473863b964ee48"
-  integrity sha512-RX8atjp8w21Ry//p46wHieFVptnTIcNJk9g0y9XKqzYHh43uGbZ5WkgnXBmVw4SAPZeDax18Qi0os4mz2eIrDQ==
+gatsby@^2.18.16:
+  version "2.18.16"
+  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-2.18.16.tgz#ad4a0b29fd90edec35437bb1dbb22d1d77bd6773"
+  integrity sha512-8ukvbONXQbVGNFo3WxCIlLrNDgnYGkz/ZIJy1DdVFbNqhky7swdvA8DzK/9Cwt7u/I8QKOTzgYMoCfqUlTgzWw==
   dependencies:
     "@babel/code-frame" "^7.5.5"
     "@babel/core" "^7.7.5"
@@ -6743,13 +6743,13 @@ gatsby@^2.18.13:
     flat "^4.1.0"
     fs-exists-cached "1.0.0"
     fs-extra "^8.1.0"
-    gatsby-cli "^2.8.19"
-    gatsby-core-utils "^1.0.24"
+    gatsby-cli "^2.8.21"
+    gatsby-core-utils "^1.0.25"
     gatsby-graphiql-explorer "^0.2.31"
     gatsby-link "^2.2.27"
-    gatsby-plugin-page-creator "^2.1.36"
+    gatsby-plugin-page-creator "^2.1.37"
     gatsby-react-router-scroll "^2.1.19"
-    gatsby-telemetry "^1.1.44"
+    gatsby-telemetry "^1.1.46"
     glob "^7.1.6"
     got "8.3.2"
     graphql "^14.5.8"