Tag releases?

[rillian]

Could you please push git tags corresponding to the crates.io releases? Having those in tree makes it easier to look at what's changed between releases.

Based on .cargo_vcs_info.json in the published crates, the corresponding revisions should be:

• challenge-bypass-ristretto-1.0.0 e46f447be0c49c3c5ac2c5ac678f72227be3087c
• challenge-bypass-ristretto-1.0.0-pre.0 be231917c82d08bb17d48dd8240858a1e4614639
• challenge-bypass-ristretto-0.1.0-pre.2 7bea87e6881f32d1d733ab625c889afbb95cafef
• challenge-bypass-ristretto-0.1.0-pre.1 b4af097214252fbc50485d973e3f7046aa75044b