minimal storage market actor tests

Feat/strgmrkt tests (#58)

* add storage market types and gen

* add storage market tests and helpers

* add balance update test

* define Candy interface, pass to helpers

* add storagemarket deal publish test

minimal storage power actor tests

storage power actor tests (#56)

* add storage power types and gen
* add storage power tests
* add id to address mapping method to message producer
* remove unused peerid type
* cbor gen update

payment channel tests and filecoin-ffi

v0.0.3

update address impl to use filecoin-ffi (#55)

minimal multisig actor tests

This release adds a small set of multisig actor tests that cover construction, approval, and cancelation.

lotus-serialization

The release has value transfer tests and storage miner tests working against lotus.