Adds plc.tartarus.us instance to the instance list.
··· 15 15 }, 16 16 { 17 17 "url": "https://plc.madebydanny.uk" 18 18 + }, 19 19 + { 20 20 + "url": "https://plc.tartarus.us" 18 21 } 19 19 - ] 22 22 + ]