v0.1.15

Turn on noUnusedLocals/noUnusedParameters

It surfaced one thing here: InkerProvider kept the AsyncLocalStorage on a
private field that nothing read. The same instance goes to InkerRenderer, which
is the only thing that enters a context into it, so the field was a second
reference no caller could reach — the wiring is unchanged.

Release 0.1.15

Fold the unreachable then branch, keeping what it explained

The check above it already answers undefined for then, so the second one
never ran. Its comment was the part worth having — why then matters, not
just that it does — and it moves up to the branch that does the work.

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Changes since v0.1.14.