Show table overflow only if limit exceeded by 2+

[rndstr]

Having to toggle a +1 feels weird while that +1 takes up
the same vertical space as displaying that row.

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Just something small I came across.

Behavior on default (or configured) row limit equals 5:

Items	Display,Overflow	(Alternative)
4	4,0	4,0
5	5,0	5,0
6	6,0	4,+2
7	5,+2	4,+3
8	5,+3	4,+4

Current implementation shows generally $limit rows, alternative would be if you want a max row (including toggle) to not exceed $limit.

[foot]

Cool idea :)

It still shows the +1 row atm. this.state.limit is still getting used around the place but has in a sense changed.

[rndstr]

@foot thanks! I missed that notShown should've been adjusted as well.

(I now also stumbled over a bug that if you pass a non-default props value for limit, after you toggle twice it would return back to default instead of the value you passed in initially.)

[foot]

Yeah good catch w/ the default prop.

Looks good now and works really nicely! LGTM