Skogul v0.7.0

Release date: 2020-06-18

Configuration can now be read from multiple files by using the new -d
option instead of -f to refer to a configuration directory instead of a
configuration file.

All configuration files need to end with .json, and all are read. When
all configuration files are read, any reference is reviewed. This means
that you can have a set of standard senders in a configuration file and
refer to them from an other.