chore: Add polished library to dependencies

package.json

@@ -8,6 +8,7 @@
     "customize-cra": "^0.2.12",
     "less": "^3.9.0",
     "less-loader": "^5.0.0",
+    "polished": "^3.3.0",
     "prop-types": "^15.7.2",
     "react": "^16.8.6",
     "react-app-rewired": "^2.1.3",

yarn.lock

@@ -803,7 +803,7 @@
   dependencies:
     regenerator-runtime "^0.13.2"
 
-"@babel/runtime@^7.1.2", "@babel/runtime@^7.4.2":
+"@babel/runtime@^7.1.2", "@babel/runtime@^7.4.2", "@babel/runtime@^7.4.4":
   version "7.4.4"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.4.4.tgz#dc2e34982eb236803aa27a07fea6857af1b9171d"
   integrity sha512-w0+uT71b6Yi7i5SE0co4NioIpSYS6lLiXvCzWzGSKvpK5vdQtCbICHMj+gbAKAOtxiV6HsVh/MBdaF9EQ6faSg==
@@ -7425,6 +7425,13 @@ [email protected]:
   dependencies:
     ts-pnp "^1.0.0"
 
+polished@^3.3.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/polished/-/polished-3.3.0.tgz#59158368b29466e19f16f5ed38007397fb66f51d"
+  integrity sha512-R04iFBAViTVQ5vMZqhwCZPcG3Av4WyUP2kxTfsr+yNoO60CXai9u7YMlExZZh56/DRoCamXKbusaTbTsBX0vtw==
+  dependencies:
+    "@babel/runtime" "^7.4.4"
+
 portfinder@^1.0.9:
   version "1.0.20"
   resolved "https://registry.yarnpkg.com/portfinder/-/portfinder-1.0.20.tgz#bea68632e54b2e13ab7b0c4775e9b41bf270e44a"