Thank you for this release. I am actually the one who didn't see the subtraction change in the ChangeLog--sorry about that!
I was wondering how to contribute/be involved in the future? I find the TimeZone parameter to be very useful, as I deal with data that comes from different timezones, and conversion issues are a major headache. I'd like to extend it to be more powerful, rather than plan to remove it. My use cases don't use the library for formatting or parsing, but for data analysis, and the type parameter has been incredibly useful for statically removing a big class of errors.