diff --git a/package.json b/package.json
index 1751759..9bae4b8 100644
--- a/package.json
+++ b/package.json
@@ -41,32 +41,32 @@
     "bluebird": "^3.7.2",
     "classnames": "^2.2.6",
     "codecov": "^3.6.2",
-    "gatsby": "^2.19.4",
+    "gatsby": "^2.19.10",
     "gatsby-link": "^2.2.28",
     "gatsby-plugin-catch-links": "^2.1.24",
     "gatsby-plugin-feed": "^2.3.26",
     "gatsby-plugin-flow": "^1.1.18",
     "gatsby-plugin-google-gtag": "^1.1.21",
-    "gatsby-plugin-manifest": "^2.2.38",
+    "gatsby-plugin-manifest": "^2.2.40",
     "gatsby-plugin-netlify": "^2.1.31",
     "gatsby-plugin-netlify-cms": "^4.1.37",
-    "gatsby-plugin-offline": "^3.0.32",
+    "gatsby-plugin-offline": "^3.0.33",
     "gatsby-plugin-optimize-svgs": "^1.0.3",
     "gatsby-plugin-react-helmet": "^3.1.21",
     "gatsby-plugin-sass": "^2.1.27",
-    "gatsby-plugin-sharp": "^2.4.0",
+    "gatsby-plugin-sharp": "^2.4.4",
     "gatsby-plugin-sitemap": "^2.2.26",
     "gatsby-remark-autolink-headers": "^2.1.23",
     "gatsby-remark-copy-linked-files": "^2.1.36",
     "gatsby-remark-external-links": "0.0.4",
-    "gatsby-remark-images": "^3.1.42",
+    "gatsby-remark-images": "^3.1.43",
     "gatsby-remark-katex": "^3.1.23",
     "gatsby-remark-prismjs": "^3.3.30",
     "gatsby-remark-relative-images": "^0.2.3",
     "gatsby-remark-responsive-iframe": "^2.2.31",
     "gatsby-remark-smartypants": "^2.1.20",
-    "gatsby-source-filesystem": "^2.1.46",
-    "gatsby-transformer-remark": "^2.6.48",
+    "gatsby-source-filesystem": "^2.1.47",
+    "gatsby-transformer-remark": "^2.6.49",
     "gatsby-transformer-sharp": "^2.3.13",
     "invariant": "^2.2.4",
     "katex": "^0.11.1",
diff --git a/yarn.lock b/yarn.lock
index 4d939c0..1cb43ec 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7384,10 +7384,10 @@ fuzzy@^0.1.1:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/fuzzy/-/fuzzy-0.1.3.tgz#4c76ec2ff0ac1a36a9dccf9a00df8623078d4ed8"
 
-gatsby-cli@^2.8.27:
-  version "2.8.27"
-  resolved "https://registry.yarnpkg.com/gatsby-cli/-/gatsby-cli-2.8.27.tgz#2b0abe5903290cd8b9f052b8b7b2516c6c6e4e6d"
-  integrity sha512-bwLk3zwa2SNVqI6TWzYFTzkQzqPPBy3OdTqffROlxpm+2BqkKxNWP4NTQ1Ea6Hq0IuRI4iM4Mm7OxKf0knbbyQ==
+gatsby-cli@^2.8.28:
+  version "2.8.28"
+  resolved "https://registry.yarnpkg.com/gatsby-cli/-/gatsby-cli-2.8.28.tgz#2e71d50282a22d7fda25e724b8a917f759bb7441"
+  integrity sha512-Kqeoq6HQe++SrJ6Fa93rzHCo7LAOMNQfLLMr88mmdqRSXnualtMUseY0nY9oPzToQchwRARDN9pn2sGw6qUS4g==
   dependencies:
     "@babel/code-frame" "^7.5.5"
     "@babel/runtime" "^7.7.6"
@@ -7404,8 +7404,8 @@ gatsby-cli@^2.8.27:
     execa "^3.4.0"
     fs-exists-cached "^1.0.0"
     fs-extra "^8.1.0"
-    gatsby-core-utils "^1.0.26"
-    gatsby-telemetry "^1.1.47"
+    gatsby-core-utils "^1.0.27"
+    gatsby-telemetry "^1.1.48"
     hosted-git-info "^3.0.2"
     is-valid-path "^0.1.1"
     lodash "^4.17.15"
@@ -7432,10 +7432,10 @@ gatsby-cli@^2.8.27:
     ink "^2.6.0"
     ink-spinner "^3.0.1"
 
-gatsby-core-utils@^1.0.26:
-  version "1.0.26"
-  resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.26.tgz#e1cbdfad498d58d677d9d74f21a1ede661b49d6f"
-  integrity sha512-NPflmXmyTcg3x2mp6cqp/51QeAHRKepfbf0X4erDsnVlewFJuGTe+25ZJvWkkwU2g1cPAxuwzlPe0jOL92iU4A==
+gatsby-core-utils@^1.0.27:
+  version "1.0.27"
+  resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.27.tgz#d08270fc3de7ca48a1ae2f0931afb08c09647141"
+  integrity sha512-w75Sjby/XhYQexeDTAQoBI385BXMt79B+hT55JwQmtz1VJ4/gQMUENG2J5ABzPsN7rD1TueNcR9BpU5Ns7sgdw==
   dependencies:
     ci-info "2.0.0"
     node-object-hash "^2.0.0"
@@ -7456,16 +7456,16 @@ gatsby-link@^2.2.28:
     "@types/reach__router" "^1.2.6"
     prop-types "^15.7.2"
 
-gatsby-page-utils@^0.0.37:
-  version "0.0.37"
-  resolved "https://registry.yarnpkg.com/gatsby-page-utils/-/gatsby-page-utils-0.0.37.tgz#6ebc47acc790574b7bfa1f628b36ea95f261cb89"
-  integrity sha512-kAeHm8yLYLelexOncfg/43TnbDcsfYIByP8IEeTDS7hJ+PLAxbwPTo8QvPX6sXi3F5PgpSwtqPEPGSqthRqJlw==
+gatsby-page-utils@^0.0.38:
+  version "0.0.38"
+  resolved "https://registry.yarnpkg.com/gatsby-page-utils/-/gatsby-page-utils-0.0.38.tgz#a43d4b5e039b622364ca680caedddc8006469816"
+  integrity sha512-tM+ByO2BPRdgGkUWkqFbLz4q9Xy896xjdkDkR6weJdqAS5K8nux56UikeYG1WJJ0AUut0R8zlGukb0QUdm80Qw==
   dependencies:
     "@babel/runtime" "^7.7.6"
     bluebird "^3.7.2"
     chokidar "3.3.0"
     fs-exists-cached "^1.0.0"
-    gatsby-core-utils "^1.0.26"
+    gatsby-core-utils "^1.0.27"
     glob "^7.1.6"
     lodash "^4.17.15"
     micromatch "^3.1.10"
@@ -7505,13 +7505,13 @@ gatsby-plugin-google-gtag@^1.1.21:
     "@babel/runtime" "^7.7.6"
     minimatch "^3.0.4"
 
-gatsby-plugin-manifest@^2.2.38:
-  version "2.2.38"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-manifest/-/gatsby-plugin-manifest-2.2.38.tgz#365d679dc815b301b38eff7893f35c62036f5e2b"
-  integrity sha512-3DXS7FTK4qJnKLAZ/8x2/UfSOVCwTykg/kp0erYbdJ2roxPvUd3paCqGm3WfzbfwKVGVBpZgMaYO/whNw/bdbQ==
+gatsby-plugin-manifest@^2.2.40:
+  version "2.2.40"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-manifest/-/gatsby-plugin-manifest-2.2.40.tgz#108b124eb537f6eaaf4d7cceb35e660dd4e26d0f"
+  integrity sha512-HulJATqu5pp1FX5e3fcg5/NMwek7v0VUqYaqtW164MTG0/knTRNhH0YJX/bvQgi3CDDW5bFX6bpKCQ5sbRo9DQ==
   dependencies:
     "@babel/runtime" "^7.7.6"
-    gatsby-core-utils "^1.0.26"
+    gatsby-core-utils "^1.0.27"
     semver "^5.7.1"
     sharp "^0.23.4"
 
@@ -7541,14 +7541,14 @@ gatsby-plugin-netlify@^2.1.31:
     lodash "^4.17.15"
     webpack-assets-manifest "^3.1.1"
 
-gatsby-plugin-offline@^3.0.32:
-  version "3.0.32"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-offline/-/gatsby-plugin-offline-3.0.32.tgz#9907421e7359f79b22da7f654c4a69749cf136c5"
-  integrity sha512-TPVRhD4LaVcCLBMzdbPUZr4bb+dv1h/HMn7ryFozFafYJ1p7XuKv2VHtqNYpfL1UKiZnWIJmEWXxfcWszLoC4w==
+gatsby-plugin-offline@^3.0.33:
+  version "3.0.33"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-offline/-/gatsby-plugin-offline-3.0.33.tgz#2171593c87228d3443d663b8bd9ab526431e7ee8"
+  integrity sha512-f4Djg37g3G32kVM/VFKot4Uk5OrS724NU2xJ0wshab2GYq6ey9UU6AqMIeHlNDBk8ZITXpgpT0aAwyiDV/Nwxw==
   dependencies:
     "@babel/runtime" "^7.7.6"
     cheerio "^1.0.0-rc.3"
-    gatsby-core-utils "^1.0.26"
+    gatsby-core-utils "^1.0.27"
     glob "^7.1.6"
     idb-keyval "^3.2.0"
     lodash "^4.17.15"
@@ -7562,15 +7562,15 @@ gatsby-plugin-optimize-svgs@^1.0.3:
     svgo "^1.3.0"
     walk "^2.3.14"
 
-gatsby-plugin-page-creator@^2.1.38:
-  version "2.1.38"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-page-creator/-/gatsby-plugin-page-creator-2.1.38.tgz#2c78d4baae296b0b3396cad689787a65c0a50585"
-  integrity sha512-N/aIxHbjaJzed6O527Zj9sdeW3YjLs4aN3yt+rx/K121yIH6gs5TMzPdSfFTxEeXEGw4ZZijJ70MBIlK0UNdkQ==
+gatsby-plugin-page-creator@^2.1.39:
+  version "2.1.39"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-page-creator/-/gatsby-plugin-page-creator-2.1.39.tgz#e01a8f59817bbc63afdab0c01d464fecb15d3cbf"
+  integrity sha512-tojv5cnt8pm5Cvks06Rypy8Ha/nONIIx+uEA1+iCsE2ekRm5ziiV5VqVSLrAxWwV2w0OgKDov+lMCco2xkdY4Q==
   dependencies:
     "@babel/runtime" "^7.7.6"
     bluebird "^3.7.2"
     fs-exists-cached "^1.0.0"
-    gatsby-page-utils "^0.0.37"
+    gatsby-page-utils "^0.0.38"
     glob "^7.1.6"
     lodash "^4.17.15"
     micromatch "^3.1.10"
@@ -7590,16 +7590,16 @@ gatsby-plugin-sass@^2.1.27:
     "@babel/runtime" "^7.7.6"
     sass-loader "^7.3.1"
 
-gatsby-plugin-sharp@^2.4.0:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-sharp/-/gatsby-plugin-sharp-2.4.0.tgz#9df4c2646a34fb7ea4ff5428f6662ef3c0a80cde"
-  integrity sha512-PmifXRuy0R16uoWPIMvjHgoPdkG30uUS9r+XYAp+WW4Q7oWy1q0R2tia3rcdwvGeOsxX98W95jy8QTqhQ3BDFQ==
+gatsby-plugin-sharp@^2.4.4:
+  version "2.4.4"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-sharp/-/gatsby-plugin-sharp-2.4.4.tgz#d41ce4d21acf9b08fde0b27be383a507e92f7154"
+  integrity sha512-i8xY612UIHjOT78SD+FAkR7Wov4/pHn+2DJ7SiSvv7I3Pb1PTKm3XksvNKbKxFMjAfUROehqsRbYCIZIDaff5Q==
   dependencies:
     "@babel/runtime" "^7.7.6"
     async "^2.6.3"
     bluebird "^3.7.2"
     fs-extra "^8.1.0"
-    gatsby-core-utils "^1.0.26"
+    gatsby-core-utils "^1.0.27"
     got "^8.3.2"
     imagemin "^6.1.0"
     imagemin-mozjpeg "^8.0.0"
@@ -7668,15 +7668,15 @@ gatsby-remark-external-links@0.0.4:
     unist-util-find "^1.0.1"
     unist-util-visit "^1.1.3"
 
-gatsby-remark-images@^3.1.42:
-  version "3.1.42"
-  resolved "https://registry.yarnpkg.com/gatsby-remark-images/-/gatsby-remark-images-3.1.42.tgz#93a6e191c6af7fafad3966616ea66b4bd5280082"
-  integrity sha512-sLZqpE1577f8iqpDR8brSYANZlsgNbe76qwIfmiI8wpLUxFcgpM1cpgSD7H0o630uZbu/szfZvvxsQzItEVAgg==
+gatsby-remark-images@^3.1.43:
+  version "3.1.43"
+  resolved "https://registry.yarnpkg.com/gatsby-remark-images/-/gatsby-remark-images-3.1.43.tgz#dd1ec7f2fedc03b3de2f660ba52ee034afb009cf"
+  integrity sha512-fFbtde+1NHI1cHIXmSsvsPBzK3kYtEh87W9t+i4wwvVitYb6unlFuskZsSgtPyqb2IQl5sMLXSNPJ/YHCYBfGA==
   dependencies:
     "@babel/runtime" "^7.7.6"
     chalk "^2.4.2"
     cheerio "^1.0.0-rc.3"
-    gatsby-core-utils "^1.0.26"
+    gatsby-core-utils "^1.0.27"
     is-relative-url "^3.0.0"
     lodash "^4.17.15"
     mdast-util-definitions "^1.2.5"
@@ -7737,10 +7737,10 @@ gatsby-remark-smartypants@^2.1.20:
     retext-smartypants "^3.0.3"
     unist-util-visit "^1.4.1"
 
-gatsby-source-filesystem@^2.1.46:
-  version "2.1.46"
-  resolved "https://registry.yarnpkg.com/gatsby-source-filesystem/-/gatsby-source-filesystem-2.1.46.tgz#ab90c4520f0664218c7334dbec6cd90acc85cf9d"
-  integrity sha512-5LC90+qMKK+/hJzZxKcazx5JvvOO1wHH+ZE7JDSHSzZ1QB+RKWnkvG4a7n6dyiFybo1HN3ql5YQXQLkBEiIfMg==
+gatsby-source-filesystem@^2.1.47:
+  version "2.1.47"
+  resolved "https://registry.yarnpkg.com/gatsby-source-filesystem/-/gatsby-source-filesystem-2.1.47.tgz#a9d147bea45856e203291c37610765b38c44e724"
+  integrity sha512-25WktQN4XUpknVkwwvIio80ZEg3tEQISOsU6N81fI0tpxLPss9iShplGQvuA3K4dsewV+CTHQs3t3vyMGSaNYg==
   dependencies:
     "@babel/runtime" "^7.7.6"
     better-queue "^3.8.10"
@@ -7748,7 +7748,7 @@ gatsby-source-filesystem@^2.1.46:
     chokidar "3.3.0"
     file-type "^12.4.0"
     fs-extra "^8.1.0"
-    gatsby-core-utils "^1.0.26"
+    gatsby-core-utils "^1.0.27"
     got "^7.1.0"
     md5-file "^3.2.3"
     mime "^2.4.4"
@@ -7758,10 +7758,10 @@ gatsby-source-filesystem@^2.1.46:
     valid-url "^1.0.9"
     xstate "^4.7.2"
 
-gatsby-telemetry@^1.1.47:
-  version "1.1.47"
-  resolved "https://registry.yarnpkg.com/gatsby-telemetry/-/gatsby-telemetry-1.1.47.tgz#680c071cde9682f2daf5301b37d1376077157300"
-  integrity sha512-vj3zGaB6Of3ExYk/VGF91qh6YcB/ofT9yYYbefO741rlK3iusv8Fzg13R8yPyRBHYOtKhgvXNbUUgH8sWHUq4Q==
+gatsby-telemetry@^1.1.48:
+  version "1.1.48"
+  resolved "https://registry.yarnpkg.com/gatsby-telemetry/-/gatsby-telemetry-1.1.48.tgz#3496202a3a9e5ec16566fd40a301c8823f8f2e9e"
+  integrity sha512-DD1gzel0HBVKB7kMMMV9YpmvSASf9zTLL2qf9ZFegI2NNrwXfE5buBIBNRef0veLaRXQvamu+ni0CRzumG2Bfw==
   dependencies:
     "@babel/code-frame" "^7.5.5"
     "@babel/runtime" "^7.7.6"
@@ -7770,7 +7770,7 @@ gatsby-telemetry@^1.1.47:
     configstore "^5.0.0"
     envinfo "^7.5.0"
     fs-extra "^8.1.0"
-    gatsby-core-utils "^1.0.26"
+    gatsby-core-utils "^1.0.27"
     git-up "4.0.1"
     is-docker "2.0.0"
     lodash "^4.17.15"
@@ -7781,14 +7781,14 @@ gatsby-telemetry@^1.1.47:
     stack-utils "1.0.2"
     uuid "3.3.3"
 
-gatsby-transformer-remark@^2.6.48:
-  version "2.6.48"
-  resolved "https://registry.yarnpkg.com/gatsby-transformer-remark/-/gatsby-transformer-remark-2.6.48.tgz#a37df4be05650371804833aa2011374771e7a39e"
-  integrity sha512-VvfNGN7L+V+Lg6Lsfqh+SFxLPcMGEjEBpy7cDjhRwUq+AEbv5kZ4lt+6+ICUD7QitsSER1AgnZz0Yp61t9YEag==
+gatsby-transformer-remark@^2.6.49:
+  version "2.6.49"
+  resolved "https://registry.yarnpkg.com/gatsby-transformer-remark/-/gatsby-transformer-remark-2.6.49.tgz#3293347fa76e784ac0319909b8195accb821bb88"
+  integrity sha512-tnXzdgBOGYKmzwS+u8BlJY7GkgUt89QcL5zSVjXlYwFD9nye3eGX6SumtpbbJc7pGDdkl1CWpBtj3Kifajb3JA==
   dependencies:
     "@babel/runtime" "^7.7.6"
     bluebird "^3.7.2"
-    gatsby-core-utils "^1.0.26"
+    gatsby-core-utils "^1.0.27"
     gray-matter "^4.0.2"
     hast-util-raw "^4.0.0"
     hast-util-to-html "^4.0.1"
@@ -7821,10 +7821,10 @@ gatsby-transformer-sharp@^2.3.13:
     semver "^5.7.1"
     sharp "^0.23.4"
 
-gatsby@^2.19.4:
-  version "2.19.4"
-  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-2.19.4.tgz#a44a1d5f19df2a8343ce690e6f3acaad75bff80c"
-  integrity sha512-ZYH5UFnjfURtGa/6InaMfe1uXeFtjhJp5WG1SZ1xHCdxYpQ5Ebv6ZNocqnt6HLAZpME8lDe6jxerhgLy6pWbCA==
+gatsby@^2.19.10:
+  version "2.19.10"
+  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-2.19.10.tgz#abb62b2661cbefd38541e67c4f9c8c69ba34af3e"
+  integrity sha512-Jl7SigQegrXq3cQQzGbY7b7jz7buLpqDPkPe10Ehkbkl8Z/aGN8OXnM5xSi+DZJ2dpHUOzm4pLr30diNPXC1rw==
   dependencies:
     "@babel/code-frame" "^7.5.5"
     "@babel/core" "^7.7.5"
@@ -7885,13 +7885,13 @@ gatsby@^2.19.4:
     flat "^4.1.0"
     fs-exists-cached "1.0.0"
     fs-extra "^8.1.0"
-    gatsby-cli "^2.8.27"
-    gatsby-core-utils "^1.0.26"
+    gatsby-cli "^2.8.28"
+    gatsby-core-utils "^1.0.27"
     gatsby-graphiql-explorer "^0.2.32"
     gatsby-link "^2.2.28"
-    gatsby-plugin-page-creator "^2.1.38"
+    gatsby-plugin-page-creator "^2.1.39"
     gatsby-react-router-scroll "^2.1.20"
-    gatsby-telemetry "^1.1.47"
+    gatsby-telemetry "^1.1.48"
     glob "^7.1.6"
     got "8.3.2"
     graphql "^14.5.8"