Prettier error handling in Signals HTTP
Prettier error handling in Signals HTTP

- "lambda" exception handlers for post() and post_to() replaced by
methods generated by a module-level method
- Test for the presence of a local receiver done earlier (avoids a
useless/verbose loop)
- No more signal content generation if the sender component is
invalidated
ahmadshahwan/cohorte-runtime,ahmadshahwan/cohorte-runtime,isandlaTech/cohorte-runtime,isandlaTech/cohorte-runtime,isandlaTech/cohorte-runtime,isandlaTech/cohorte-runtime,ahmadshahwan/cohorte-runtime,ahmadshahwan/cohorte-runtime,isandlaTech/cohorte-runtime,ahmadshahwan/cohorte-runtime,isandlaTech/cohorte-runtime,ahmadshahwan/cohorte-runtime