Add ability to get the tasks in a list

Author: dorgan

README.md

@@ -93,6 +93,7 @@ $clickup->folder("SPACE_ID")->createList("LIST_NAME");
 ### List
 ```php
 $clickup->taskList("LIST_ID")->get();
+$clickup->taskList("LIST_ID")->getTasks();
 $clickup->taskList("LIST_ID")->comments();
 $clickup->taskList("LIST_ID")->members();
 $clickup->taskList("LIST_ID")->getCustomFields();

src/Models/TaskList.php

@@ -26,4 +26,10 @@ public function addTask(array $data)
 
         return $this->client()->post($this->model.DS.$this->id.DS.'task', $data);
     }
+
+    public function getTasks(array $data=[]) {
+        $this->checkId();
+
+        return $this->client()->get($this->model.DS.$this->id.DS.'task', $data);
+    }
 }