Get pushed systems from EDSM in a thread.
Get pushed systems from EDSM in a thread.

jgoode/EDDiscovery,jeoffman/EDDiscovery,mwerle/EDDiscovery,jthorpe4/EDDiscovery,jgoode/EDDiscovery,mwerle/EDDiscovery,jeoffman/EDDiscovery,vendolis/EDDiscovery,vendolis/EDDiscovery