0.7.0

Rollup of 0.6.x releases

• Add uncaught exception loggers to thread factories.
• Add type literal helper support.
• Fix request/3 to use non-throwing http call.
• Handle retries with non-throwing requests.
• Change streaming accept header to application/json #98
• Add back pressure buffering to stream processor for volume stream requests. #100
• Allow blocking access to stream processors