defs/misc: add maid, omni, usdt

defs/misc/misc.json

@@ -98,5 +98,34 @@
             "Homepage": "https://tron.network",
             "Github": "https://github.com/tronprotocol/java-tron"
         }
+    },
+    {
+        "name": "Omni",
+        "shortcut": "OMNI",
+        "slip44": 0,
+        "curve": "secp256k1",
+        "links": {
+            "Homepage": "https://www.omnilayer.org",
+            "Github": "https://github.com/OmniLayer"
+        }
+    },
+    {
+        "name": "MaidSafeCoin",
+        "shortcut": "MAID",
+        "slip44": 0,
+        "curve": "secp256k1",
+        "links": {
+            "Homepage": "https://maidsafe.net",
+            "Github": "https://github.com/maidsafe"
+        }
+    },
+    {
+        "name": "Tether",
+        "shortcut": "USDT",
+        "slip44": 0,
+        "curve": "secp256k1",
+        "links": {
+            "Homepage": "https://tether.to"
+        }
     }
 ]

defs/support.json

@@ -794,6 +794,9 @@
       "eth:tROP": "1.6.2",
       "eth:tRSK": "1.6.2",
       "misc:LSK": "1.7.1",
+      "misc:MAID": "1.7.2",
+      "misc:OMNI": "1.7.2",
+      "misc:USDT": "1.7.2",
       "misc:WAN": "1.6.3",
       "misc:XLM": "1.7.1",
       "nem:BREEZE": "1.6.2",
@@ -1719,8 +1722,11 @@
       "misc:ADA": "2.0.8",
       "misc:EOS": "soon",
       "misc:LSK": "2.0.7",
+      "misc:MAID": "2.0.10",
+      "misc:OMNI": "2.0.10",
       "misc:ONT": "soon",
       "misc:TRX": "soon",
+      "misc:USDT": "2.0.10",
       "misc:WAN": "2.0.7",
       "misc:XLM": "2.0.8",
       "misc:XMR": "2.0.8",