Really going to post the treemodel-fix blog post series now

So last August (ahem) I announced the merge of the treemodel-fix branch and a blog post series on interesting things that I’ve learned while working on treemodel-fix. By the end of the Summer, I got carried away with other things. To make sure things do not go wrong this time, I have already written all posts and will be publishing them in the coming two weeks. It is a bit late, but since the code is still the same and the details are quite interesting, I thought it was still useful to do.