remove xtend dep, closes #1044 (#1065)

* remove xtend dep, closes #1044

* update deps to non-xtend versions

package.json

@@ -40,13 +40,13 @@
     "bytes": "^3.1.0",
     "chalk": "^2.4.2",
     "cli-truncate": "^1.0.0",
-    "dat-doctor": "^2.1.1",
+    "dat-doctor": "^2.1.2",
     "dat-encoding": "^5.0.1",
-    "dat-json": "^1.0.0",
-    "dat-link-resolve": "^2.2.0",
+    "dat-json": "^1.0.3",
+    "dat-link-resolve": "^2.3.0",
     "dat-log": "^1.2.0",
     "dat-node": "^3.5.11",
-    "dat-registry": "^4.0.0",
+    "dat-registry": "^4.0.1",
     "debug": "^4.0.0",
     "neat-log": "^3.1.0",
     "prettier-bytes": "^1.0.3",
@@ -55,19 +55,18 @@
     "pump": "^3.0.0",
     "rimraf": "^2.6.3",
     "speedometer": "^1.1.0",
-    "subcommand": "^2.1.0",
+    "subcommand": "^2.1.1",
     "throttle": "^1.0.3",
-    "update-notifier": "^2.3.0",
-    "xtend": "^4.0.1"
+    "update-notifier": "^2.3.0"
   },
   "devDependencies": {
     "cross-zip-cli": "^1.0.0",
     "dependency-check": "^3.3.0",
     "hypercore": "^6.25.0",
     "hyperdiscovery": "^8.0.0",
     "mkdirp": "^0.5.1",
-    "pkg": "^4.3.3",
-    "random-access-memory": "^3.0.0",
+    "pkg": "^4.3.7",
+    "random-access-memory": "^3.1.1",
     "recursive-readdir-sync": "^1.0.6",
     "request": "^2.88.0",
     "standard": "^12.0.0",

src/commands/publish.js

@@ -24,7 +24,7 @@ function publish (opts) {
   var prompt = require('prompt')
   var chalk = require('chalk')
   var DatJson = require('dat-json')
-  var xtend = require('xtend')
+  var xtend = Object.assign
   var Registry = require('../registry')
 
   if (!opts.dir) opts.dir = process.cwd()

src/registry.js

@@ -1,4 +1,4 @@
-var xtend = require('xtend')
+var xtend = Object.assign
 var RegistryClient = require('dat-registry')
 
 module.exports = function (opts) {