I'm not sure what the Vladimir is considering "complete" for a 1.0
release, but as it stands right now, UKI is fairly complete. If you
take a look at the github page
https://github.com/voloko/uki/ you'll
see what is planned for the next release, but not anything further.
As for tutorials, there are few and even documentation is fairly
sparse, but getting started is fairly straight forward if you take a
look through the individual code samples
http://ukijs.org/examples/ or
https://github.com/voloko/uki/wiki/ and check out the different Pages
for a couple of tutorials.
UKI works fine with any other library and yes you can give your
elements id's and classes, however, because of HOW the elements are
drawn on the page, I'd suggest that you don't access their content via
any other library except for uki. You can, however, perform other
actions as needed (hide, animations).
Uki is not very well styled with CSS at all right now. Theme files are
created in JavaScript (as far as I know) and seem to be, more or less,
straightforward. Version 0.4 is supposed to remove this and push the
styling over the CSS.
Uki.more, from my understanding, is a set of views that provide
advanced functionality that not every project may need.However, if you
look through the project on github you'll notice that it's pretty much
been removed from there. Not sure whether this means that support is
discontinued or if it will be coming back...