Fix Invoice/Estimate template issues and Add Payment Receipt, Custom Payment Modes and Item units

app/Mail/TestMail.php

@@ -0,0 +1,38 @@
+<?php
+namespace Crater\Mail;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Mail\Mailable;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Contracts\Queue\ShouldQueue;
+
+class TestMail extends Mailable
+{
+    use Queueable, SerializesModels;
+    public $subject;
+    public $message;
+
+    /**
+     * Create a new message instance.
+     *
+     * @param $subject
+     * @param $message
+     */
+    public function __construct($subject, $message)
+    {
+        $this->subject = $subject;
+        $this->message = $message;
+    }
+
+    /**
+     * Build the message.
+     *
+     * @return $this
+     */
+    public function build()
+    {
+        return $this->subject($this->subject)->markdown('emails.test')->with([
+            'my_message' => $this->message
+        ]);
+    }
+}