In line 374 of ox-publish.el in `org-publish-needed-p', there are 3
spaces between "message" and "Skipping". It should better be just 1
space.

In the comments in line 624 of ox-publish.el, "excepted" should be
"except".

I found these while reading the code. Sorry if I am nitpicking too much.

Regards,
Arun Isaac.