Backport use Node.js version 10

Update instructions, Dockerfile and Travis CI to use Node.js 10.
Specify that Node.js version 10 or greater is needed in the engines
section of package.json (note that this is only advisory.)  And document
this as a breaking change in CHANGELOG.md.

This is a backport of 69a1ff7.

.travis.yml

@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-  - "9"
+  - 10
 before_install:
   - sudo apt-get -qq update
   - sudo apt-get install -y curl git tar

CHANGELOG.md

@@ -19,6 +19,10 @@ Version 1.2.2
 - Swapped curl out with wget in the install instructions as the latter comes
   pre-installed on Ubuntu.
 
+### Breaking Changes
+
+- Node.js versions below 10 are no longer supported.
+
 
 Version 1.2.1
 -------------

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:9.11.2
+FROM node:10
 RUN apt-get update && apt install git curl tar -y
 RUN mkdir factorioClusterio
 

README.md

@@ -95,7 +95,7 @@ NodeJS does not support EOL ubuntu releases. Make sure you are on the most recen
 
 Master and all slaves:
 
-    wget -O - https://deb.nodesource.com/setup_9.x | sudo -E bash -
+    wget -O - https://deb.nodesource.com/setup_10.x | sudo -E bash -
     sudo apt install -y nodejs python-dev git build-essential
     git clone -b 1.2.x https://github.com/Danielv123/factorioClusterio.git
     cd factorioClusterio
@@ -168,7 +168,7 @@ Game Client = The people connecting to the server
 
 **Requirements**
 
-download and install nodeJS 8 or 9 from http://nodejs.org
+download and install nodeJS 10 from http://nodejs.org
 
 download and install git from https://git-scm.com/
 

package.json

@@ -16,6 +16,9 @@
   ],
   "author": "Danielv123",
   "license": "MIT",
+  "engines": {
+    "node": ">=10"
+  },
   "dependencies": {
     "as-table": "^1.0.31",
     "averaged-timeseries": "^1.4.0",