Proposal pitches Map and Filter onto iter.Seq

The headline today is a proposal to bolt Map and Filter methods directly onto iter.Seq and iter.Seq2, which would push the iterator package a notable step toward the functional shape people have been building by hand since range-over-func landed. Alongside it, a separate x/crypto/ssh proposal picks up the IETF draft on composite SSH signature algorithms, so the proposals queue is leaning cryptographic and ergonomic at once. Over on the discussion side, a Hacker News post revisits Concurrent ML and argues Go's channels left a few ideas on the table, which pairs oddly well with a toot introducing gracias, a CLI that scans your dependencies and tells you who to fund.