v0.5.2

Added

• New CI workflow to build and test the mycelium library separately from the full
  provided binary build.

Changed

• Disabled the protobuf feature on prometheus, this removes protobuf related code
  and significantly reduces the release binary size.
• Changed log level when sending a protocol message to a peer which is no longer
  alive from error to trace in most instances.
• Improved performance of sending protocol messages to peers by queueing up multiple
  packets at once (if multiple are ready).
• Before trying to send an update we now check if it makes sense to do so.
• If a peer died, fallback routes using it are no longer retained with an infinite
  metric but removed immediately.
• No longer run route selection for subnets if a peer died and the route is not
  selected.
• If routes are removed, shrink the capacity of the route list in the route table
  if it is larger than required.
• Check if the originator of a TLV is still available before processing said TLV.
• The router now uses a dedicated task per TLV type to handle received TLV's from
  peers.
• Statically linking openssl is now a feature flag when building yourself.

Fixed

• If a peer died, unselect the selected routes which have it as next-hop if there
  is no other feasible route.
• Properly unselect a route if a retraction update comes in and there is no other
  feasible route.
• If the router bumps it's seqno it now properly announces the local route to it's
  peers instead of the selected routes
• Seqno bump requests for advertised local routes now properly bump the router
  seqno.