Possibility to add borders for cells

[michalowskil]

Choosing which side the border should be on and choosing the thickness and color?

[maia]

What if a completely empty row will produce a horizontal line that matches the style of the defaulttype: divider in the HA entities card?

[michalowskil]

A separator is a good idea, but not as empty row: #11
Thanks!

[michalowskil]

Custom CSS is coming with version 0.15.0. This takes care of the borders.