Upgrade winston

Our log library got a new major version which should be implemented.

That's exactly what this patch does. Implementing the new version of the
logging library.

Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>

lib/logger.js

@@ -1,23 +1,19 @@
 'use strict'
-const winston = require('winston')
+const {createLogger, format, transports} = require('winston')
 
-class Logger extends winston.Logger {
-  // Implement stream.writable.write interface
-  write (chunk) {
-    this.info(chunk)
-  }
-}
-
-module.exports = new Logger({
+module.exports = createLogger({
+  level: 'debug',
+  format: format.combine(
+    format.uncolorize(),
+    format.timestamp(),
+    format.align(),
+    format.splat(),
+    format.printf(info => `${info.timestamp} ${info.level}: ${info.message}`)
+  ),
   transports: [
-    new winston.transports.Console({
-      level: 'debug',
-      handleExceptions: true,
-      json: false,
-      colorize: false,
-      timestamp: true
+    new transports.Console({
+      handleExceptions: true
     })
   ],
-  emitErrs: true,
   exitOnError: false
 })