- update to version 4.1.26
* fix for tx monitoring without an initialized audio device
* The header file error.h does not exist in the musl libc. It is safe
to just remove it.
* Add documentation for Cloudlog part
* Add button for testing the API key
* Add ability to log to cloud (web) log
* correct window icon tranparency for Unbuntu window manager
* changed reading system fonts to fonts dialog instantiation
* modify test and action for FL_LEAVE event in frequency control widget