v0.1.0 Pre-Release

resolver to be multi-address compatible (#4)

* resolver to be multi-address compatible

* check split address rather than prefix

* remove comment

* backends functional with multiaddress

* resolvers functional with multi addresses

* updated test_utils for multi address test requirements

* tidy

* add dfs transcoder, http backend does not require an http client, context with timeout added for dfs get

* use node context for dfs backend rather than background

* update interfaces version