espalarm Code

More structure

Replace printf by ESP_LOGx

Update boot copyright message

Provide a minimal RFM69 stub here already, add a couple of comments, etc

Remove RFM69 references, this is not a card reader

Additional recovery case

Register a rogue weather node if it talks to you. Unlikely but it just happened.

Never return a NULL timezone

Copy a bit of code from esp-idf to make better build rules (especially to create a build timestamp only when required.

Continue work to organize network switch / interruption