Upgrades versions chai, sinon, and soap deps

Note that sinon-chai and chai-as-promised at this point require chai<4, and have now
switched to no longer installing chai on their own. Hence, we have to hold it at 3.x.

Also increments release to 0.6.3.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "wirelesstags",
-  "version": "0.6.2",
+  "version": "0.6.3",
   "description": "Interface to the Wireless Sensor Tags platform (http://wirelesstag.net)",
   "main": "index.js",
   "scripts": {
@@ -34,20 +34,20 @@
     "deep-equal": ">=1.0.1",
     "promise-retry": "^1.1.1",
     "request": ">=2.79.0",
-    "soap": "^0.18.0",
+    "soap": "^0.19.0",
     "timeout-as-promise": "^1.0.0"
   },
   "devDependencies": {
     "babel-preset-es2015": "^6.18.0",
-    "chai": "*",
+    "chai": "^3.5.0",
     "chai-as-promised": "^6.0.0",
     "erudite": "^0.7.1",
     "eslint": "^3.15.0",
     "jsdoc": "hlapp/jsdoc#fix-resourcepath-resolution-3.4",
     "mocha": "*",
     "p-any": "^1.0.0",
     "p-limit": "^1.1.0",
-    "sinon": "^1.17.6",
+    "sinon": "^2.3.2",
     "sinon-chai": "^2.8.0"
   }
 }