Bunch of changes including mpdf library for creating pdf of invoices. It now attaches a PDF invoice when marked sent. Don't mark invoice_status sent if it partial or paid, removed green text from balance under clients only use red if the client has a balance and some other cleanups were done

vendor/myclabs/deep-copy/fixtures/f001/B.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace DeepCopy\f001;
+
+class B extends A
+{
+    private $bProp;
+
+    public function getBProp()
+    {
+        return $this->bProp;
+    }
+
+    public function setBProp($prop)
+    {
+        $this->bProp = $prop;
+
+        return $this;
+    }
+}