Also adds lines targeting Buffy

Which lacked quotation marks

Also adds a proof of concept shot

Xander should now be complete!

Now up to 426

Update behaviour.xml

See merge request !35

Update behaviour.txt

See merge request !34

Also makes targeted lines more distinctive

Xander is now up to 372 lines, including 21 targeted at Buffy. :)

Also 3 tags

Which mistakenly were imported with an option off

Xander's poses should now be complete

Since the trophy seems to confuse some players

As suggested on Reddit. Feel free to revert or replace.

With the new way to indicate which characters have endings, this
question is no longer likely to be frequent. Also, the list that was
linked is unmaintained. (FAQ written by Dilettante.)