implement JSON methods for tree

package.json

@@ -6,8 +6,8 @@
   "main": "dist/index.js",
   "typings": "dist/index.d.ts",
   "scripts": {
-    "test": "tsrun test/test.ts",
-    "build": "(npmts)"
+    "test": "(tstest test/)",
+    "build": "(tsbuild)"
   },
   "repository": {
     "type": "git",
@@ -20,13 +20,15 @@
   },
   "homepage": "https://gitlab.com/pushrocks/lik#README",
   "devDependencies": {
-    "@gitzone/tsrun": "^1.1.9",
-    "@pushrocks/tapbundle": "^3.0.1",
-    "@types/node": "^10.5.2"
+    "@gitzone/tsbuild": "^2.0.22",
+    "@gitzone/tsrun": "^1.1.12",
+    "@gitzone/tstest": "^1.0.15",
+    "@pushrocks/tapbundle": "^3.0.5",
+    "@types/node": "^10.9.4"
   },
   "dependencies": {
     "@pushrocks/smartpromise": "^2.0.5",
-    "@types/lodash": "^4.14.112",
+    "@types/lodash": "^4.14.116",
     "@types/minimatch": "^3.0.3",
     "lodash": "^4.17.10",
     "minimatch": "^3.0.4",