You're probably already aware of this, but in case you're not and considering that the compliance page says to let you know if there's anything missing, I'd just like to point out that RFC 6145 has been obsoleted by RFC 7915.
Looking at the changelog I think the most significant change is that you can now in good conscience purge the atomic fragment support from Jool. However, maybe it's best to do so in v3.5 in case anyone actually depends on it (for the record, I don't).
More misc review and testing
Also fixes the atomic fragments part of #221.
I'd like to leave this open to remind me that I should read the new RFC more thoroughly. (Though atomic fragments were indeed already purged.)