diff --git a/package.json b/package.json
index 80fec20..4b24356 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "bluebird": "^3.5.5",
     "classnames": "^2.2.6",
     "codecov": "^3.6.1",
-    "gatsby": "^2.15.20",
+    "gatsby": "^2.15.24",
     "gatsby-link": "^2.2.15",
     "gatsby-plugin-catch-links": "^2.1.10",
     "gatsby-plugin-feed": "^2.3.13",
@@ -49,25 +49,25 @@
     "gatsby-plugin-google-gtag": "^1.1.9",
     "gatsby-plugin-manifest": "^2.2.18",
     "gatsby-plugin-netlify": "^2.1.15",
-    "gatsby-plugin-netlify-cms": "^4.1.17",
-    "gatsby-plugin-offline": "^3.0.8",
+    "gatsby-plugin-netlify-cms": "^4.1.19",
+    "gatsby-plugin-offline": "^3.0.9",
     "gatsby-plugin-optimize-svgs": "^1.0.3",
     "gatsby-plugin-react-helmet": "^3.1.8",
     "gatsby-plugin-sass": "^2.1.15",
     "gatsby-plugin-sharp": "^2.2.25",
     "gatsby-plugin-sitemap": "^2.2.14",
     "gatsby-remark-autolink-headers": "^2.1.11",
-    "gatsby-remark-copy-linked-files": "^2.1.20",
+    "gatsby-remark-copy-linked-files": "^2.1.21",
     "gatsby-remark-external-links": "0.0.4",
     "gatsby-remark-images": "^3.1.23",
     "gatsby-remark-katex": "^3.1.10",
     "gatsby-remark-prismjs": "^3.3.14",
     "gatsby-remark-relative-images": "^0.2.3",
-    "gatsby-remark-responsive-iframe": "^2.2.17",
+    "gatsby-remark-responsive-iframe": "^2.2.18",
     "gatsby-remark-smartypants": "^2.1.9",
     "gatsby-source-filesystem": "^2.1.26",
     "gatsby-transformer-remark": "^2.6.24",
-    "gatsby-transformer-sharp": "^2.2.16",
+    "gatsby-transformer-sharp": "^2.2.17",
     "invariant": "^2.2.4",
     "katex": "^0.11.1",
     "lodash": "^4.17.15",
diff --git a/yarn.lock b/yarn.lock
index 0acc744..91a2e67 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6005,10 +6005,10 @@ fuzzy@^0.1.1:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/fuzzy/-/fuzzy-0.1.3.tgz#4c76ec2ff0ac1a36a9dccf9a00df8623078d4ed8"
 
-gatsby-cli@^2.7.49:
-  version "2.7.49"
-  resolved "https://registry.yarnpkg.com/gatsby-cli/-/gatsby-cli-2.7.49.tgz#47a52c92e89b85ccdf0a5e8fbac0d49f120ebada"
-  integrity sha512-Bsko3geZr502/9xl5/jik0wddNrzBDcWCm3dFsFy0FUcXHu8WISIjYPdCVRwqTTAu1yBX30QsJtBbu/9LTjIKA==
+gatsby-cli@^2.7.50:
+  version "2.7.50"
+  resolved "https://registry.yarnpkg.com/gatsby-cli/-/gatsby-cli-2.7.50.tgz#91b70cb1c67b255996dbacd7d40a2f2c26190095"
+  integrity sha512-VvBhQvT2Gg/Wc7YGyqIuTQr05F4R08IeecVLrXEA5YPDlco3enoGmeBx8o4uvS5ZHO2A8hT8VsQp5uCVHa5o+Q==
   dependencies:
     "@babel/code-frame" "^7.5.5"
     "@babel/runtime" "^7.6.0"
@@ -6056,10 +6056,10 @@ gatsby-core-utils@^1.0.10:
   resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.10.tgz#f4309a8439e36b3e833c00b1903f381148df4c1b"
   integrity sha512-AeOrwjF4LiAHAqvrUkAFtvZHkLpKtF2gnIS/nezHDzIMq0SaZLHbdQiJcesyzZ6CcerjLIDWbD6MqxrTt6KkhA==
 
-gatsby-graphiql-explorer@^0.2.18:
-  version "0.2.18"
-  resolved "https://registry.yarnpkg.com/gatsby-graphiql-explorer/-/gatsby-graphiql-explorer-0.2.18.tgz#5801f327399d312d53ba423cd6c486ffc02f7707"
-  integrity sha512-QQmX1Jg5LBsTG6ZoYte0nHS7+tApea/sVCntHSe4M7JRnM8KrECJJsyDesCBUME6lvzV5wdUV9TvFER3+sK++A==
+gatsby-graphiql-explorer@^0.2.19:
+  version "0.2.19"
+  resolved "https://registry.yarnpkg.com/gatsby-graphiql-explorer/-/gatsby-graphiql-explorer-0.2.19.tgz#4d804f6fa3cbd72ebeedc0800c8b4fd9428d685a"
+  integrity sha512-OBfmxFZ2LxIydri0Jb83m7+F/iMm2uhk5no+SLaLuFOnoweehm2zKZLk7gk7rW6kX2eHt2VgZ5i3IgldNaMhEg==
   dependencies:
     "@babel/runtime" "^7.6.0"
 
@@ -6131,10 +6131,10 @@ gatsby-plugin-manifest@^2.2.18:
     semver "^5.7.1"
     sharp "^0.23.0"
 
-gatsby-plugin-netlify-cms@^4.1.17:
-  version "4.1.17"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-netlify-cms/-/gatsby-plugin-netlify-cms-4.1.17.tgz#e5916dd092a588965b566bc4789dcf62e2894fac"
-  integrity sha512-JCSbgFSGsfGPZK/ysa7okUGERoFKMnSpMlOj+0t8mVPlSdYRCGs+/R8BiHt8hvOvz+E2c323umQGDm+Hdba0Xg==
+gatsby-plugin-netlify-cms@^4.1.19:
+  version "4.1.19"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-netlify-cms/-/gatsby-plugin-netlify-cms-4.1.19.tgz#e832de000983255c0c2c4c762d01316851308f63"
+  integrity sha512-jpU9FG0JeYu8Qobbjhx/J4AFmEHkUbjMUszmGO2kqdA7PtSji47MIJEiNtoijSbbhQqSCSpMxysAKWfaSJVrNw==
   dependencies:
     "@pieh/friendly-errors-webpack-plugin" "1.7.0-chalk-2"
     html-webpack-exclude-assets-plugin "^0.0.7"
@@ -6142,7 +6142,7 @@ gatsby-plugin-netlify-cms@^4.1.17:
     lodash "^4.17.15"
     mini-css-extract-plugin "^0.8.0"
     netlify-identity-widget "^1.5.5"
-    webpack "^4.40.2"
+    webpack "^4.41.0"
 
 gatsby-plugin-netlify@^2.1.15:
   version "2.1.15"
@@ -6155,10 +6155,10 @@ gatsby-plugin-netlify@^2.1.15:
     lodash "^4.17.15"
     webpack-assets-manifest "^3.1.1"
 
-gatsby-plugin-offline@^3.0.8:
-  version "3.0.8"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-offline/-/gatsby-plugin-offline-3.0.8.tgz#b2a78402810e0fbd98fb674f912172bce420438e"
-  integrity sha512-p6JDT9WTx/yUyKg+P3lwkTyr0mDB7iF9whLzHbgaeilx8jmRCVdrTYOs13FUERxxcmdtiX0s1yh/6isIs/upkg==
+gatsby-plugin-offline@^3.0.9:
+  version "3.0.9"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-offline/-/gatsby-plugin-offline-3.0.9.tgz#b7f6b75ef50733c992461f597f27be0bb5d7a373"
+  integrity sha512-ySQkZCp8LbtOpLHQORm7mbH4ExTOx0YK/lYLg7rE28hIgs95O6NIWAlq6oqckIFGPn+wkVdyy3BC0c3OCo97SQ==
   dependencies:
     "@babel/runtime" "^7.6.0"
     cheerio "^1.0.0-rc.3"
@@ -6259,10 +6259,10 @@ gatsby-remark-autolink-headers@^2.1.11:
     mdast-util-to-string "^1.0.6"
     unist-util-visit "^1.4.1"
 
-gatsby-remark-copy-linked-files@^2.1.20:
-  version "2.1.20"
-  resolved "https://registry.yarnpkg.com/gatsby-remark-copy-linked-files/-/gatsby-remark-copy-linked-files-2.1.20.tgz#3504949b6e19f25091914de04909782de0239088"
-  integrity sha512-bw+Lf3u9foV1uEbYxLTkfIXbNrjOn3vGwJ33zXw+uzF5fAsC0IDeSN0/wNsvshDsBVUpjafS0rG7jyWFYxpg6g==
+gatsby-remark-copy-linked-files@^2.1.21:
+  version "2.1.21"
+  resolved "https://registry.yarnpkg.com/gatsby-remark-copy-linked-files/-/gatsby-remark-copy-linked-files-2.1.21.tgz#67942e706d08f17108b14488b07b32f7f3e492b9"
+  integrity sha512-WrPY0vQeJ/SpFOfvfWGwzJB3dZbSiN2xZ+ri01A1cU8rmAwhCtCp2bc8JuJIxcYoKXTG5e9osSpILqIX2oBuWA==
   dependencies:
     "@babel/runtime" "^7.6.0"
     cheerio "^1.0.0-rc.3"
@@ -6330,10 +6330,10 @@ gatsby-remark-relative-images@^0.2.3:
     slash "^2.0.0"
     unist-util-select "^1.5.0"
 
-gatsby-remark-responsive-iframe@^2.2.17:
-  version "2.2.17"
-  resolved "https://registry.yarnpkg.com/gatsby-remark-responsive-iframe/-/gatsby-remark-responsive-iframe-2.2.17.tgz#c8478c449940348bb9fc37af5590b8bf3fea0b79"
-  integrity sha512-EzbOkWKYi2pX9DMS18m2jCJ7LRmJdndFdtuLHXG1XW1t7iM8iae8BMrV37MDA/BP76mYYZWp7Ohb5wZvhWCFjg==
+gatsby-remark-responsive-iframe@^2.2.18:
+  version "2.2.18"
+  resolved "https://registry.yarnpkg.com/gatsby-remark-responsive-iframe/-/gatsby-remark-responsive-iframe-2.2.18.tgz#6d1785ef076d6def1177923070374be4d8e89527"
+  integrity sha512-piyK4Ihr7fbTW/dyZXfKUkzt+Jk+UpkMq5VwPCzDayFf+ISDeCfebZpW/fnCuXBPZsaX/e7NevcNPaswWMj8sA==
   dependencies:
     "@babel/runtime" "^7.6.0"
     bluebird "^3.5.5"
@@ -6422,10 +6422,10 @@ gatsby-transformer-remark@^2.6.24:
     unist-util-select "^1.5.0"
     unist-util-visit "^1.4.1"
 
-gatsby-transformer-sharp@^2.2.16:
-  version "2.2.16"
-  resolved "https://registry.yarnpkg.com/gatsby-transformer-sharp/-/gatsby-transformer-sharp-2.2.16.tgz#909a62f4369318bfa40779f8dce1126ba4564757"
-  integrity sha512-9aWhm7LAra5NFgA/QY9Z3gYU6g9uNnrWckR9om/s3ATcxw+VjXz+CUGEOPjyiJ93NF4rAFMfwlaa+BZWOFb4hw==
+gatsby-transformer-sharp@^2.2.17:
+  version "2.2.17"
+  resolved "https://registry.yarnpkg.com/gatsby-transformer-sharp/-/gatsby-transformer-sharp-2.2.17.tgz#53270268fbb26d29b2726f7fd18ea4c70f2f4eba"
+  integrity sha512-VoPopwU0xbh5iD/UbCBOjz7biv3j6ihfy129uStAN25a8fY34GBUt+j0pN6+8glkG+dgf/aOuBPyXyxHwobmIw==
   dependencies:
     "@babel/runtime" "^7.6.0"
     bluebird "^3.5.5"
@@ -6435,10 +6435,10 @@ gatsby-transformer-sharp@^2.2.16:
     semver "^5.7.1"
     sharp "^0.23.0"
 
-gatsby@^2.15.20:
-  version "2.15.20"
-  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-2.15.20.tgz#f79aae8f086b49b08dc1126866c8a77b4039849c"
-  integrity sha512-/z7FtYZCZLMh31Tp1sHmdoqGZFiLsSRxSbkUis2TxHFL+bfUpiHAaebKW+OOt0ILUlaGBLNVbbuwJzjxv4kxHg==
+gatsby@^2.15.24:
+  version "2.15.24"
+  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-2.15.24.tgz#2cb7d545208fd8bea8bcba5916e809bd85e1bfb7"
+  integrity sha512-c5DJmK/kRgxWxswL0cFaxbscKCy+SdSh830cyOaHkIrT7Qg9qU6bu9hRIl+MXpXW5m0WbAuOfzDB33aw7UBsRw==
   dependencies:
     "@babel/code-frame" "^7.5.5"
     "@babel/core" "^7.6.0"
@@ -6500,9 +6500,9 @@ gatsby@^2.15.20:
     flat "^4.1.0"
     fs-exists-cached "1.0.0"
     fs-extra "^8.1.0"
-    gatsby-cli "^2.7.49"
+    gatsby-cli "^2.7.50"
     gatsby-core-utils "^1.0.10"
-    gatsby-graphiql-explorer "^0.2.18"
+    gatsby-graphiql-explorer "^0.2.19"
     gatsby-link "^2.2.15"
     gatsby-plugin-page-creator "^2.1.21"
     gatsby-react-router-scroll "^2.1.9"
@@ -6515,7 +6515,7 @@ gatsby@^2.15.20:
     invariant "^2.2.4"
     is-relative "^1.0.0"
     is-relative-url "^3.0.0"
-    is-wsl "^2.1.0"
+    is-wsl "^2.1.1"
     jest-worker "^24.9.0"
     json-loader "^0.5.7"
     json-stringify-safe "^5.0.1"
@@ -6544,7 +6544,7 @@ gatsby@^2.15.20:
     raw-loader "^0.5.1"
     react-dev-utils "^4.2.3"
     react-error-overlay "^3.0.0"
-    react-hot-loader "^4.12.13"
+    react-hot-loader "^4.12.14"
     redux "^4.0.4"
     redux-thunk "^2.3.0"
     semver "^5.7.1"
@@ -6563,7 +6563,7 @@ gatsby@^2.15.20:
     util.promisify "^1.0.0"
     uuid "^3.3.3"
     v8-compile-cache "^1.1.2"
-    webpack "~4.40.2"
+    webpack "~4.41.0"
     webpack-dev-middleware "^3.7.1"
     webpack-dev-server "^3.8.1"
     webpack-hot-middleware "^2.25.0"
@@ -8285,6 +8285,11 @@ is-wsl@^2.1.0:
   resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-2.1.0.tgz#94369bbeb2249ef07b831b1b08590e686330ccbb"
   integrity sha512-pFTjpv/x5HRj8kbZ/Msxi9VrvtOMRBqaDi3OIcbwPI3OuH+r3lLxVWukLITBaOGJIbA/w2+M1eVmVa4XNQlAmQ==
 
+is-wsl@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/is-wsl/-/is-wsl-2.1.1.tgz#4a1c152d429df3d441669498e2486d3596ebaf1d"
+  integrity sha512-umZHcSrwlDHo2TGMXv0DZ8dIUGunZ2Iv68YZnrmCiBPkZ4aaOhtv7pXJKeki9k3qJ3RJr0cDyitcl5wEH3AYog==
+
 isarray@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
@@ -12080,10 +12085,10 @@ react-helmet@^5.2.1:
     react-fast-compare "^2.0.2"
     react-side-effect "^1.1.0"
 
-react-hot-loader@^4.12.13:
-  version "4.12.13"
-  resolved "https://registry.yarnpkg.com/react-hot-loader/-/react-hot-loader-4.12.13.tgz#78dcb55f49f88ce3d4316c7c86a8c01fdd196cd2"
-  integrity sha512-4Byk3aVQhcmTnVCBvDHOEOUnMFMj81r2yRKZQSfLOG2yd/4hm/A3oK15AnCZilQExqSFSsHcK64lIIU+dU2zQQ==
+react-hot-loader@^4.12.14:
+  version "4.12.14"
+  resolved "https://registry.yarnpkg.com/react-hot-loader/-/react-hot-loader-4.12.14.tgz#81ca06ffda0b90aad15d6069339f73ed6428340a"
+  integrity sha512-ecxH4eBvEaJ9onT8vkEmK1FAAJUh1PqzGqds9S3k+GeihSp7nKAp4fOxytO+Ghr491LiBD38jaKyDXYnnpI9pQ==
   dependencies:
     fast-levenshtein "^2.0.6"
     global "^4.3.0"
@@ -15377,10 +15382,10 @@ webpack-stats-plugin@^0.3.0:
   resolved "https://registry.yarnpkg.com/webpack-stats-plugin/-/webpack-stats-plugin-0.3.0.tgz#6952f63feb9a5393a328d774fb3eccac78d2f51b"
   integrity sha512-4a6mEl9HLtMukVjEPY8QPCSmtX2EDFJNhDTX5ZE2CLch2adKAZf53nUrpG6m7NattwigS0AodNcwNxlu9kMSDQ==
 
-webpack@^4.40.2, webpack@~4.40.2:
-  version "4.40.2"
-  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.40.2.tgz#d21433d250f900bf0facbabe8f50d585b2dc30a7"
-  integrity sha512-5nIvteTDCUws2DVvP9Qe+JPla7kWPPIDFZv55To7IycHWZ+Z5qBdaBYPyuXWdhggTufZkQwfIK+5rKQTVovm2A==
+webpack@^4.41.0, webpack@~4.41.0:
+  version "4.41.0"
+  resolved "https://registry.yarnpkg.com/webpack/-/webpack-4.41.0.tgz#db6a254bde671769f7c14e90a1a55e73602fc70b"
+  integrity sha512-yNV98U4r7wX1VJAj5kyMsu36T8RPPQntcb5fJLOsMz/pt/WrKC0Vp1bAlqPLkA1LegSwQwf6P+kAbyhRKVQ72g==
   dependencies:
     "@webassemblyjs/ast" "1.8.5"
     "@webassemblyjs/helper-module-context" "1.8.5"