Fixed padding issues

[MichielDeMey]

This PR improves padding on your tables and allows them to look more like tables.

• Introduces 2 new properties

  • row._renderedContent.contentHeight which will be the actual content size of the content inside the cell
  • column.headerPadding which can be used to set the padding for the header separately from the body

• Adds bottomMargin to the bottom of the table.

• Fixes borders so they look more like a table

Output

Using the README example and the following defaults

.setColumnsDefaults({
  headerBorder: 'TRBL',
  border: 'TRBL',
  align: 'right',
  padding: [ 50, 10, 0, 10 ],
  headerPadding: [ 5, 10 ]
})

Original

With padding improvements

[tafel]

It has been a while, sorry for the latency :-) ... I checked the code and it's ok. I just added a second comment on the last line. I let you finalize the pull request so I can merge it.

[tafel]

Integrated in 0.4.0 release. Thank you!