/// <summary>
/// Creates an instance of a panel and adds it as a subpanel
/// </summary>
/// <param name="parentPanel">The panel to add this one to</param>
/// <param name="pos">The position of this panel relative to the origin</param>
public Panel(Panel parentPanel, Vector2 pos)
{
this.offset = pos;
parentPanel.addSubPanel(this);
subPanels = new List<Panel>();
}
