* Set three modes of operating serial:
* Default: serials will start at 0 and increment at every change
* Beginning: serial will be set to the value found in the JSON then increment at every change
* Full: serial will be set based on the value found in the JSON at each refresh
* Possibility to read a slurm file (rfc8416) from an http/https endpoint or from a file
* Filters prefixes and adds new ones contained in the configuration
* Can output a new rpki.json which contains the updated prefixes and sign it (other GoRTR can consome from it)
