This latest release of Jekyll includes a slew of enhancements and bug fixes. Some of the highlights:

One change deserves special note. In #2633, subfolders inside a _posts folder were processed and added as categories to the posts. It turns out, this behaviour was unwanted by a large number of individuals, as it is a handy way to organize posts. Ultimately, we decided to revert this change in #2705, because it was a change in behaviour that was already well-established (at least since Jekyll v0.7.0), and was convenient.

For more excellent CHANGELOG reading material, check out the History page! Happy Jekylling!