Update dependencies.

package.json

@@ -5,60 +5,60 @@
   "author": "Ruben Harutyunyan <[email protected]>",
   "dependencies": {
     "font-awesome": "^4.7.0",
-    "gatsby": "2.0.40",
-    "gatsby-image": "2.0.19",
-    "gatsby-plugin-catch-links": "2.0.6",
-    "gatsby-plugin-feed": "2.0.9",
-    "gatsby-plugin-google-analytics": "2.0.7",
-    "gatsby-plugin-lodash": "3.0.2",
-    "gatsby-plugin-manifest": "2.0.7",
-    "gatsby-plugin-netlify-cms": "3.0.6",
-    "gatsby-plugin-nprogress": "2.0.6",
-    "gatsby-plugin-offline": "2.0.12",
-    "gatsby-plugin-react-helmet": "3.0.1",
-    "gatsby-plugin-sass": "2.0.3",
-    "gatsby-plugin-sharp": "2.0.12",
-    "gatsby-plugin-sitemap": "2.0.2",
-    "gatsby-plugin-twitter": "2.0.7",
-    "gatsby-remark-autolink-headers": "2.0.10",
-    "gatsby-remark-copy-linked-files": "2.0.6",
-    "gatsby-remark-images": "2.0.6",
-    "gatsby-remark-prismjs": "3.0.3",
-    "gatsby-remark-relative-images": "0.2.0",
-    "gatsby-remark-responsive-iframe": "2.0.6",
-    "gatsby-source-filesystem": "2.0.7",
-    "gatsby-transformer-remark": "2.1.11",
-    "gatsby-transformer-sharp": "2.1.8",
+    "gatsby": "2.0.91",
+    "gatsby-image": "2.0.26",
+    "gatsby-plugin-catch-links": "2.0.9",
+    "gatsby-plugin-feed": "2.0.11",
+    "gatsby-plugin-google-analytics": "2.0.9",
+    "gatsby-plugin-lodash": "3.0.3",
+    "gatsby-plugin-manifest": "2.0.13",
+    "gatsby-plugin-netlify-cms": "3.0.9",
+    "gatsby-plugin-nprogress": "2.0.7",
+    "gatsby-plugin-offline": "2.0.21",
+    "gatsby-plugin-react-helmet": "3.0.5",
+    "gatsby-plugin-sass": "2.0.7",
+    "gatsby-plugin-sharp": "2.0.17",
+    "gatsby-plugin-sitemap": "2.0.4",
+    "gatsby-plugin-twitter": "2.0.8",
+    "gatsby-remark-autolink-headers": "2.0.12",
+    "gatsby-remark-copy-linked-files": "2.0.8",
+    "gatsby-remark-images": "3.0.1",
+    "gatsby-remark-prismjs": "3.2.0",
+    "gatsby-remark-relative-images": "0.2.1",
+    "gatsby-remark-responsive-iframe": "2.0.8",
+    "gatsby-source-filesystem": "2.0.16",
+    "gatsby-transformer-remark": "2.2.0",
+    "gatsby-transformer-sharp": "2.1.10",
     "lodash": "^4.17.10",
-    "moment": "^2.22.2",
-    "netlify-cms": "2.1.3",
-    "node-sass": "^4.10.0",
+    "moment": "^2.23.0",
+    "netlify-cms": "2.3.3",
+    "node-sass": "^4.11.0",
     "prismjs": "^1.15.0",
-    "react": "^16.6.0",
+    "react": "^16.7.0",
     "react-disqus-comments": "^1.4.0",
-    "react-dom": "^16.6.0",
+    "react-dom": "^16.7.0",
     "react-helmet": "^5.2.0",
-    "react-md": "^1.8.0",
-    "react-share": "^2.1.0",
+    "react-md": "^1.9.2",
+    "react-share": "^2.4.0",
     "react-twitter-widgets": "^1.7.1",
     "url-join": "^4.0.0"
   },
   "devDependencies": {
     "cli-glob": "^0.1.0",
-    "eslint": "^5.8.0",
+    "eslint": "^5.12.1",
     "eslint-config-airbnb": "^17.1.0",
-    "eslint-config-prettier": "^3.1.0",
+    "eslint-config-prettier": "^3.6.0",
     "eslint-plugin-import": "^2.8.0",
     "eslint-plugin-jsx-a11y": "^6.1.2",
-    "eslint-plugin-react": "^7.5.1",
+    "eslint-plugin-react": "^7.12.4",
     "gh-pages": "^2.0.1",
-    "prettier": "^1.14.3",
-    "remark-cli": "^6.0.0",
+    "prettier": "^1.16.0",
+    "remark-cli": "^6.0.1",
     "remark-preset-lint-recommended": "^3.0.1",
     "stylefmt": "^6.0.3",
-    "stylelint": "^9.7.1",
+    "stylelint": "^9.10.1",
     "stylelint-config-standard": "^18.0.0",
-    "write-good": "^0.13.1"
+    "write-good": "^1.0.1"
   },
   "keywords": [
     "gatsby"