v0.10.0.beta8 - Performance improvements and a new warning

This release has reduced the number of memory allocations in a request, which results in faster responses and significantly fewer calls to the garbage collector.

A new warning has been added if find_fragments detects that the results returned are not normalized. This can happen if the records method was overridden and joins in a to_many relationship. This warning can be disabled with the warn_on_performance_issues configuration setting.