fix taproot crate

[mimoo]

not sure why it's so messy, I can try to create another clean PR if you want :)

the changes are here: https://github.com/mimoo/frost/commits/mimoo/fix5/ and are basically what I pointed out in the comments in ZcashFoundation#584

(if you rebase on top of the latest changes in frost, and run cargo fmt, then I can create a clean PR)

[zebra-lucky]

Thank your for your work!

I'll look more closely in few days.

Currently looking for DKG generating only even Y.

[zebra-lucky]

I'll try to check out PR code locally to test

git fetch origin pull/1/head:PR1
git checkout PR1

[zebra-lucky]

I've seen proposed changes, and need reread BIP340/341
on oddness of Y related to tweaked public key.

[zebra-lucky]

Trying to reproduce a problem without proposed changes.

[zebra-lucky]

A problem with odd tweaked public key is reproduced.

Adding proposed changes and testing again.

[zebra-lucky]

@mimoo, thanks you again for your work!

I've tested your changes and it's work fine.

I've rebased base branch on 6d82adf, plus processed code
with cargo fmt, so you can rebase your PR branch to simplify merge.

[mimoo]

awesome I'll clean this up then :)

[mimoo]

here you go!