Variable SheetCellRendererConst

CellRender that has advanced rendering for an ICell. Some of the features are:

1. Fill (Solid, Gradient, Pattern)
2. Horizontal Alignment (Left, Right, Center, Justify)
3. Vertical Alignment (Top, Middle, Bottom)
4. Spacing formatting (*, ?)
5. Decimal rounding
6. Overflow Character
7. Text Wrapping
8. Text Rotation
9. Indentions
10. Text Color
11. Underline (Accounting, Standard, Double, Single)
12. Scaling
13. Super/Subscript
14. Indicators (Warning, Comments, Error, etc)
15. Filter buttons
16. Formulas