twitter/bootstrap — pull request #470 by damiancarrillo (2011-10-24 00:21:55+00:00)
Title: Rounding pagination list boundary items

Previously you would use `prev` and `next` to round the corners of the
items in the pagination list. I changed it to use the `first-child`
and 'last-child' becuase you want the corners rounded regardless of
whether or not you have a list item marked with the `prev` or `next`
class. For example, I have the following pagination list:

[1][...][12][13][14][15][16][...][23]

I could have added the `prev` and `next` classes to the boundary
items (1 and 23), however it's semantically incorrect, and I think
this solution is more flexible.