- Now that we detect correct stanza _grouping_ within `on_*` blocks in
Casks (PR 15211), correct stanza _ordering_ in `on_*` blocks was the
next logical step. For example, `url` has to come after `version` and
`sha256` in an `on_macos` or `on_intel` block for consistency with the
top-level stanza order we enforce elsewhere.
- Still not doing the nested `on_os` inside `on_arch`, that felt
excessive for an edge case that isn't present in any actual real
Casks we have. I removed the test with that specific TODO.
Anywhere we can use `blob/master` we can use `blob/HEAD` instead. This
will make life easier if we ever rename our default branch in future
(once/if Git and GitHub provides the necessary tooling to do so).
