The original vector_math repo didn't use the public_member_api_docs analysis option, and as a result is missing a lot of docs (e.g., many public classes don't have class-level docs or constructor docs).

As part of migrating it to flutter/core-packages, we're switching it over to the standard analysis options. For now, I'm going to annotate a lot of files with // ignore_for_file: public_member_api_docs (or in a few cases, a single line-level // ignore) and a TODO referencing this issue. Over time, those ignores should be removed and the violations fixed.