Support for logger adapting to report logs to IOpipe

Released on October 10, 2018.

• Support for the IOpipe logger events and log uploading.
• The event-info plugin no longer fails if classes it supports by default do not exist.
• The class IOpipeMeasurement has been removed.
• The deprecated methods IOpipeExecution.plugin() which took functional interfaces have been removed.
• Extra method in TraceUtils to trace a few functional interfaces, these methods always run.
• Internal optimizations and refactoring.