Node-RED Report-By-Exception (RBE) Node

The `node-red-node-rbe` package provides a Node-RED node for implementing report-by-exception (RBE) and deadband/narrowband filtering logic within Node-RED flows. It ensures that messages are only passed through if their `msg.payload` changes significantly from the previously sent value, reducing redundant data processing and network traffic. The node can operate in RBE mode (value changes), deadband mode (value changes by more than a fixed amount or percentage), or narrowband mode (blocks if value changes *more* than a threshold, useful for ignoring outliers). It supports filtering on a per-`msg.topic` basis, allowing a single node to manage multiple data streams concurrently. The current stable version is 0.8.0, with releases typically marked as 'Milestone Releases', indicating less frequent, feature-driven updates rather than strict semantic versioning for every change. Its primary differentiation lies in its direct integration into Node-RED's visual programming paradigm for efficient data conditioning.