Decode timestamp into interface{}

[moorereason]

From decode.go:

		} else if tag == yaml_TIMESTAMP_TAG {
			// It looks like a timestamp but for backward compatibility
			// reasons we set it as a string, so that code that unmarshals
			// timestamp-like values into interface{} will continue to
			// see a string and not a time.Time.
			// TODO(v3) Drop this.
			out.Set(reflect.ValueOf(n.value))

Is there a chance of exposing timestamp decoding in the v2 branch? Perhaps via a boolean on Decoder (similar to strict mode)?

Or when does v3 come out? 😉

Ref: gohugoio/hugo#3983

[moorereason]

Abandoning this issue.