v0.14.4: Type fixes

This release mainly fixes/corrects TypeScript issues with iterable properties & tag.attributes = {...} assigments. The worked as expected, but would generate TS errors in VSCode.

There's also one runtime fix: don't add to _inflight array when there are no pending consumers of a queue. This could result in a value getting eaten by the debouncing queue

Full Changelog: Release-v0.14.3...Realease-v0.14.4

PR: #36