flag for showing header values

Thanks to @basselAhmed

Bug fix for default value type

Thank you @basselAhmed 🥇

Formatter for header cells

Thanks to @basselAhmed for the PR eef1ae6

Styling for cells with props

v1.0

v1.0

Percentage of columns fix

v0.8.5

percentage of columns fix

Considering all rows in a column for calculation

v0.8.0

considering all rows of column