😒 chore(deps): Upgrade.

package.json

@@ -27,9 +27,9 @@
     "url": "https://github.com/aureooms/js-collections-defaultdict/issues"
   },
   "dependencies": {
-    "@aureooms/js-collections-dict": "^3.0.0",
-    "@aureooms/js-error": "^3.0.0",
-    "@aureooms/js-mapping": "^3.0.0"
+    "@aureooms/js-collections-dict": "^4.0.0",
+    "@aureooms/js-error": "^4.0.0",
+    "@aureooms/js-mapping": "^3.1.0"
   },
   "devDependencies": {
     "@aureooms/js-compare": "1.4.5",
@@ -39,7 +39,7 @@
     "@aureooms/js-operator": "1.0.2",
     "@aureooms/js-sort": "7.0.0",
     "ava": "3.8.1",
-    "coveralls": "2.13.3",
+    "coveralls": "3.1.0",
     "esdoc": "1.1.0",
     "nyc": "15.0.1",
     "@babel/cli": "7.8.4",
@@ -50,7 +50,7 @@
     "esdoc-inject-script-plugin": "1.0.0",
     "esdoc-inject-style-plugin": "1.0.0",
     "esdoc-standard-plugin": "1.0.0",
-    "np": "6.2.1"
+    "np": "6.2.3"
   },
   "homepage": "http://aureooms.github.io/js-collections-defaultdict/",
   "keywords": [