non-power-of-two subnets now ok
divide networks (now Networks) from locations (dropped for now)
restore host location, needed for work
update changelog
rename "world" and "always" to "FALLBACK" and "ALL"
update changelog
v0.200

          [ WILL TOTALLY BREAK YOUR SETUP! ]

          "locations" are now "networks" and make sense

          a host node can have multiple interfaces, across multiple networks,
          which will result in a split horizon

          the "world" location is now the "FALLBACK" network, the "ALL" network
          performs a similar role