4bb9240992 bitcoin: Add comment to manifest (Tobin C. Harding)
c6c70a721e bitcoin: Update feature docs (Tobin C. Harding)
7712e5d891 bitcoin: Use 100 colum width in crate level docs (Tobin C. Harding)
Pull request description:
Update stale crate level docs in `bitcoin`. Done as two separate patches so the last one is trivial to review, whitespace only.
ACKs for top commit:
Kixunil:
ACK 4bb9240992
apoelstra:
ACK 4bb9240992
Tree-SHA512: b9d5474f7e7a0576f535df428ea20084acbcb74d0576e7f2934c547dd2c54f4a939d73ec547b3b254105a45c2372113c65ce136be1eabd63701259a3a6de3737