Updates regarding UPenn tree

[Richard M. Alderson III]

On 20 Sep 1999, Sean Crist wrote:

>Later, the team added _two_ new characters which forced the Italo-Celtic
>sub-branch (not just one character as I previously incorrectly reported).
>One was the *p..kw > *kw..kw character (a sound change shared by Italic
>and Celtic)

And potentially by Germanic, as well:  Cf. the word for "5".

								Rich Alderson