* Logger processors can now delete from the context, not just add/modify keys (#52).
* ProcessorBase, SenderBase, StrategyBase are now exported to make custom versions easier (#50, #51).
* BrowserProcessor now provides actual window.performance.memory values (#55).
* ServerLogger now preserves primitive values of boxed primitives on web-submitted logs (#57).
* ServerLogger now allows the maximum number of listeners on requests to be configured.