Webhooks

Work in progress/roadmap requirements:

• DTLS support for CoAP endpoints.
• Geo lookup for invoked webhooks.
• CBOR (Concise Binary Object Representation) support for CoAP endpoints.
• Blockwise transfer for extended CoAP support.
• Read and Observed Read extended CoAP support over pub channels.
• Support for HTML POST using XML payloads with XSLT pre-processing for filtering and JSON transformation.