Merge pull request #215 from Pchelolo/new_version

Bump version to 2.6.19 and update dependencies.

package.json

 {
   "name": "service-runner",
-  "version": "2.6.18",
+  "version": "2.6.19",
   "description": "Generic nodejs service supervisor / cluster runner",
   "main": "service-runner.js",
   "bin": {
@@ -34,28 +34,29 @@
     "node": ">=4.2.2"
   },
   "dependencies": {
-    "bluebird": "^3.5.2",
+    "bluebird": "^3.5.4",
     "bunyan": "^1.8.12",
     "bunyan-syslog-udp": "^0.2.0",
-    "dnscache": "^1.0.1",
+    "dnscache": "^1.0.2",
     "gelf-stream": "^1.1.1",
-    "hot-shots": "^5.9.1",
-    "js-yaml": "^3.12.0",
+    "hot-shots": "^6.3.0",
+    "js-yaml": "^3.13.1",
     "limitation": "^0.2.1",
-    "semver": "^5.6.0",
-    "yargs": "^12.0.2"
+    "npm-check-updates": "^3.1.9",
+    "semver": "^6.1.0",
+    "yargs": "^13.2.4"
   },
   "optionalDependencies": {
-    "gc-stats": "^1.2.1",
-    "heapdump": "^0.3.12"
+    "gc-stats": "^1.3.0",
+    "heapdump": "^0.3.14"
   },
   "devDependencies": {
     "bunyan-prettystream": "git+https://github.com/hadfieldn/node-bunyan-prettystream#master",
     "coveralls": "^3.0.3",
-    "eslint": "^5.14.0",
-    "eslint-config-wikimedia": "^0.10.1",
-    "eslint-plugin-json": "^1.2.1",
-    "eslint-plugin-jsdoc": "^3.9.1",
+    "eslint": "^5.16.0",
+    "eslint-config-wikimedia": "^0.12.0",
+    "eslint-plugin-json": "^1.4.0",
+    "eslint-plugin-jsdoc": "^7.0.2",
     "mocha": "^6.1.4",
     "mocha-lcov-reporter": "^1.3.0",
     "nyc": "^14.1.1"