Collapse and Expand Regions

Supports #region, #pragma region and <!--region. Default keys are (Ctrl+R, Ctrl+Num+) and (Ctrl+R, Ctrl+Num-).

Supports /// <summary> and ///<summary>. Default keys are (Ctrl+E, Ctrl+Num+) and (Ctrl+E, Ctrl+Num-).

Can be changed in Tools->Options->Environment->Keyboard with Region.Collapse and Region.Expand for #region, and Summary.Collapse and Summary.Expand for summary xml tag.