Faster encoding: Encoding is 1.25× faster and more memory efficient.
Default values for encoding missing fields: Provides a way to either specify per-column defaults or a general fallback value (missing fields would previously throw a runtime exception).
Nominal Builder types: prevents unsafe coercions when using builders.
@hvr created and/or maintained a whole bunch of foundational Haskell packages, and it seems like @andreasabel has been keeping the lights on for most of them (and other packages!) for several years now.
Thanks to all of you! It probably goes unnoticed far too often just how much maintenance work is carried out by a surprisingly small group of astonishingly dedicated maintainers.