New Features / Improvements =========================== - `tdma_advanced_node` can now pass an empty list for `~comms_slots`. When empty, (`comms_slots=""`) this tells `tdma_advanced_node` not to send comms packets in _any_ slots. Useful for a ping only tdma MAC config Bugfixes ======== - `acomms_driver_node`: changed minimum ping_reply_timeout from 5 seconds to 1. - `modem_sim_node`: changed minimum ping_reply_timeout from 5 seconds to 1. - `tdma_advanced_node` bug fix for empty `~comms_slots`.