bug: fix is_mining for some miners.

pyasic/miners/backends/antminer.py

@@ -451,3 +451,15 @@ class AntminerOld(CGMiner):
                 return False if int(web_get_conf["bitmain-work-mode"]) == 1 else True
             except LookupError:
                 pass
+
+        api_summary = None
+        try:
+            api_summary = await self.api.summary()
+        except APIError:
+            pass
+
+        if api_summary is not None:
+            if not api_summary == {}:
+                return True
+            else:
+                return False

pyasic/web/antminer.py

@@ -192,3 +192,12 @@ class AntminerOldWebAPI(BaseWebAPI):
 
     async def set_miner_conf(self, conf: dict) -> dict:
         return await self.send_command("set_miner_conf", **conf)
+
+    async def stats(self) -> dict:
+        return await self.send_command("miner_stats")
+
+    async def summary(self) -> dict:
+        return await self.send_command("miner_summary")
+
+    async def pools(self) -> dict:
+        return await self.send_command("miner_pools")