add optional dependency on server (`npm start`)

package.json

@@ -1,8 +1,25 @@
 {
-  "name": "paco_sako",
+  "name": "paco-sako",
   "version": "0.4.0",
   "description": "Online version of the Paco Ŝako chess variation",
-  "browser": "index.js",
+  "keywords": [
+    "game",
+    "board game",
+    "chess",
+    "peace chess",
+    "paco ŝako",
+    "paco sako",
+    "HTML5",
+    "ES6",
+    "svg",
+    "web",
+    "2d"
+  ],
+  "homepage": "https://jessemcdonald.info/gogs/nybble/paco_sako",
+  "bugs": "https://jessemcdonald.info/gogs/nybble/paco_sako/issues",
+  "license": "CC-PDDC",
+  "author": "Jesse McDonald <nybble41@gmail.com>",
+  "main": "js/pacosako.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
     "build": "webpack",
@@ -11,16 +28,14 @@
   },
   "repository": {
     "type": "git",
-    "url": "gogs@jessemcdonald.info:nybble/paco_sako.git"
+    "url": "https://jessemcdonald.info/gogs/nybble/paco_sako.git"
   },
-  "author": "Jesse McDonald <nybble41@gmail.com>",
-  "license": "CC-PDDC",
   "devDependencies": {
     "clean-webpack-plugin": "^3.0.0",
     "copy-webpack-plugin": "^5.1.1",
     "deep-equal": "git+https://jessemcdonald.info/gogs/nybble/node-deep-equal",
     "extract-loader": "^5.0.1",
-    "html-webpack-plugin": "^4.0.4",
+    "html-webpack-plugin": "^4.3.0",
     "jbox": "^1.2.0",
     "jquery-ui-touch-punch": "^0.2.3",
     "lodash": "^4.17.15",
@@ -28,7 +43,7 @@
     "optimize-css-assets-webpack-plugin": "^5.0.3",
     "svgo": "^1.3.2",
     "svgo-loader": "^2.2.1",
-    "webpack": "^4.42.1",
+    "webpack": "^4.43.0",
     "webpack-cli": "^3.3.11",
     "webpack-jquery-ui": "^2.0.1",
     "workbox-precaching": "^5.1.3",
@@ -37,5 +52,11 @@
     "workbox-webpack-plugin": "^5.1.3",
     "workbox-window": "^5.1.3"
   },
-  "dependencies": {}
+  "dependencies": {},
+  "optionalDependencies": {
+    "paco-sako-server": "git+https://jessemcdonald.info/gogs/nybble/paco_sako_server"
+  },
+  "engines": {
+    "node": ">=10.19.0"
+  }
 }

server.js

@@ -0,0 +1 @@
+require('paco-sako-server');