#bamboo is such a cool project! I was very excited to find it last night. Great work!
I had a question after reading the `README.md` file: Why does a #bamboo message have a `backlink` and a `lipmaalink` property? Would it be insecure / inconvenient to _only_ provide the `lipmaalink`? Since the `lipmaalink` is deterministic, wouldn't knowing the current message's sequence number (`n`) be enough to perform verification and prevent tampering (eg: `prevSequence = lipmaa_iterative(MY_SEQUENCE_NUMBER)`)?