Sublattices of associahedra and permutohedra

In versions 1 and 2, there is an obvious bug on Page 1 (Introduction) in the definition of the Tamari lattice via binary bracketings: we should write that if $t$ is obtained by $s$ by substituting one occurrence of some (uv)w by u(vw), then $s$ lies below $t$ (and then take the reflexive, transitive closure). There is also a potentially troublesome misprint at the end of the proof of Lemma 11.4. These bugs were easy to fix, and are all corrected in version 3.