v0.0.0-alpha.5: Add STM-based Anchor implementation. (#29)

* Implement software-transactional memory (STM) in package stm.

* Implement basic transactional API for STM-based Anchor trees.

* Implement generic bounded types.

* Implement bounded Path type & update cluster.capnp to use path strings.

* Add Path indexer.

* Test binding path from parts & children

* Rename anchor.Anchor to anchor.Scheduler & test initialization.

* Implement STM-backed root anchor.

* Refactor cluster and anchor capability schemas.

* Remove orphaned anchors.

* Major refactor.  Bundle anchor & view in host cap.

* Add TODO for LoadValue()

* Add TODO for client.Node

v0.0.0-alpha.4

Fix bug in flow limiter contention due to capnproto

v0.0.0-alpha.3: Merge pull request #21 from wetware/feature/chan

Feature/chan

v0.0.0-alpha.2: Merge pull request #17 from wetware/bugfix/nonblocking-sub-handler

Fix rpc.Conn disconnect when subscription buffer is full

v0.0.0-alpha.1: Enhancement/ns dial error (#14)

* Include namespace in Vat connection errors to help diagnose misconfigured dial attempts.

* Report dial errors resulting from namespace mismatch.