update dependencies

package.json

@@ -6,20 +6,20 @@
   "dependencies": {
     "@types/d3": "^5.0.1",
     "@types/d3-tip": "^3.5.5",
-    "d3": "^5.15.0",
+    "d3": "^5.16.0",
     "d3-tip": "^0.9.1",
     "d3scription": "^1.0.1",
-    "lit-element": "^2.2.1",
-    "typescript": "^3.7.4"
+    "lit-element": "^2.4.0",
+    "typescript": "^4.0.2"
   },
   "devDependencies": {
-    "@babel/core": "^7.8.3",
-    "@babel/plugin-transform-runtime": "^7.8.3",
-    "@babel/preset-env": "^7.8.3",
-    "@babel/runtime": "^7.8.3",
-    "@webcomponents/webcomponentsjs": "^2.4.1",
-    "babel-loader": "^8.0.5",
-    "browser-sync": "^2.26.7",
+    "@babel/core": "^7.11.6",
+    "@babel/plugin-transform-runtime": "^7.11.5",
+    "@babel/preset-env": "^7.11.5",
+    "@babel/runtime": "^7.11.2",
+    "@webcomponents/webcomponentsjs": "^2.4.4",
+    "babel-loader": "^8.1.0",
+    "browser-sync": "^2.26.12",
     "camelcase": "^5.0.0",
     "clean-webpack-plugin": "^1.0.1",
     "css-loader": "^2.1.0",
@@ -32,12 +32,12 @@
     "gulp-minify": "^3.1.0",
     "live-server": "^1.2.1",
     "npm-run-all": "^4.1.3",
-    "onchange": "^6.1.0",
+    "onchange": "^6.1.1",
     "style-loader": "^0.23.1",
     "ts-node": "^7.0.1",
     "url-loader": "^1.1.2",
-    "webpack": "^4.41.5",
-    "webpack-cli": "^3.3.10"
+    "webpack": "^4.44.2",
+    "webpack-cli": "^3.3.12"
   },
   "scripts": {
     "tscW": "tsc -w",