# 21.1 (2021-01-10)
## Bug Fixes
* fix for publishing several MQTT updates at once
* optimized keep alive option for net devices
* fix for duplicate entry "minarbitrationmicros" in HTTP GET
* fix for extra send retry
* fix for newer compiler versions
* fix for potential illegal string usages
* fix for named net device not being resolvable during startup
## Features
* added Raspberry Pi docker image
* added support for Cygwin build
* added option to use "\*" as trailing wildcard for circuit and name in MQTT /list topic
* added "--mqttinsecure" option
* updated to newest version of enhanced protocol
* added adapter 3 PIC tool "ebuspicloader" for uploading new firmware and configuring fix IP address