Deps cleanup (#82)

* chore: create release to devDepencies

This avoids end users installing octokit.

* chore: remove debug dependency

Debug requires were replaced by app.debug calls, no
longer needed.

package.json

@@ -23,16 +23,15 @@
   "license": "ISC",
   "dependencies": {
     "@canboat/canboatjs": "1.x",
-    "@signalk/github-create-release": "^1.2.1",
     "baconjs": "^0.7.88",
-    "debug": "^3.1.0",
     "lodash": "^4.17.4"
   },
   "repository": {
     "type": "git",
     "url": "https://github.com/SignalK/signalk-to-nmea2000"
   },
   "devDependencies": {
+    "@signalk/github-create-release": "^1.2.1",
     "chai": "^4.1.2",
     "mocha": "^5.0.0",
     "signalk-server": "^1.4.0",