Adding streaming capability for updates. Disabled caching on updates to enable this.
Removing left over debug statement.
Fixing pep8 formatting
Added StreamedSerialResponseValue class to enable caching of streamed jsonyfiable objects. Moved caching to serialize_results to support caching for POST requests too based on filter.
Moved database query into cached method. Cache now uses 'since' and 'filter' as part of keys
Fixing pep8
Merge pull request #45 from abn/streaming

[Issue #44] Implementing streamed responses for update