Fix watch + update dependencies

Author: guillaume-kotulski

lib/preprocessor.js

@@ -356,7 +356,7 @@ class Preprocessing {
 
 
     runWatch() {
-        function add(inPath, prepro) {
+        const add = (inPath, prepro) => {
 
             const isMD = this._IsMD(path.extname(inPath)) //is markdown
 
@@ -370,7 +370,7 @@ class Preprocessing {
             }
         }
 
-        function change(inPath, prepro) {
+        const change = (inPath, prepro) => {
 
             const isMD = this._IsMD(path.extname(inPath)) //is markdown
             if (isMD && prepro._collectFile(inPath, true)) //a REF has changed so an include, better copy all
@@ -389,7 +389,7 @@ class Preprocessing {
             }
         }
 
-        function unlink(inPath, prepro) {
+        const unlink = (inPath, prepro) => {
 
             const isMD = this._IsMD(path.extname(inPath)) //is markdown
             let newFilePath = inPath.replace(prepro._path, prepro._destination)