version-0.5.3

• cleaned up to not install unused wicked@.service example
• wickedd: added shutdownDevice method to ifdown transition from
  up to exists, used in bond/bridge to release slaves/ports.
• cleaned up internal iftype vs. arptype mappings and handling
• client: ifdown deletes the devices created by ifup
• configure: added rtnetlink,dcbnl,if_link checks
• macvlan: initial support, no ifcfg yet (fate#315131)
• wireless: do not scan and bind supplicant by default,
  corrected the schema to use proper auth-methods type
• socket: handle hangup after input, but before output
• added refcounting for ni_dbus_watch_data_t objects
• bonding: fixed bonding slave duplicate checks
• client: add client-state including a persistent mode
  to skip ifdown for important interfaces by default
• client: ifup --persistent and ifdown --force options
• several lldp fixes, mostly for parsing / formating
• logging: added timestamp option to stderr --log-target
• extensions/updater: get and set NIS settings from lease
• extensions: replace resolver with new generic updater
  using simple netconfig key-value leaseinfo dump files
• dhcp4: initial --test implementation (fate#316111)
• dhcp6: initial --test implementation (fate#316111)
• dhcp6: fixed to accept low preference server offers
• dhcp4: set fsm state before building the message
• dhcp4: don't use offered address in initial request
• netlink: diverse error/return code handling fixes
• netlink: switched from libnl1 to libnl3
• moved TODO file content into individual github issues