I've just released Converse.js 7.0.6
It includes an OMEMO-related fix for a bug that on the surface appears bad (and embarrassing), but AFAICT it's relatively harmless.
However, to be on the safe side, please update and generate new keys (I'm sorry for the hassle).
Now's a good time to point out that *all* OMEMO work on Converse was done in my free time without pay and the code has not been vetted by security researchers
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