* fix: Update from TRANSASCTION_VERSION to EXTRINSIC_VERSION

* Remove stray code

* feat: Add `proxy.{proxyAnnounced, announce}`, `utility.asDerivative`

* Add docs to methods; Run yarn docs

* Update src/methods/utility/asDerivative.spec.ts

Co-authored-by: David <[email protected]>

* Explain proxy filtering

* Update doc comments

* Yarn docs

Co-authored-by: David <[email protected]>

* Tests not working

* Tests working

* small update'

* bug: Update `addProxy` and `removeProxy`

* Add rejectProxy`

* Update exports

* Apply suggestions from code review

Co-authored-by: joe petrowski <[email protected]>

* Run yarn docs

Co-authored-by: joe petrowski <[email protected]>