a bunch of logic is moved around, some queries are improved, max_size
does what it's actually supposed to do. all in all this is a much
clearer chainer, even if the actual results are more or less the same.
it's probably a bit faster in most cases but slower in situations when
all the seed words have been consumed and it needs to do
__start1,__start2 chains (since there's so many of them, it's rather
slow). otherwise, it tries to use seed words in sentences, combining
multiple sentences when possible. there's a lot more in the periphery,
but that's the general idea
Brian S. Stephan
5314dadc07