Some more cleanup and refactorings

* Reformatted long line.
* Refactored ClientHandler to make code more organized
    * Also, easier to write tests for.

[Update] Fixed implicit conversions warning
Began test suite for Actor(s)Handler

Some reasonable tests in place for Actor handlers
Note: Eventually, the generators should be moved to the elucidator project
Merge pull request #242 from typesafehub/wip/elucidator-integration-actors

Began test suite for Actor(s)Handler