Merge pull request #41 from jwillemsen/jwi-boostdata2

Retrieve and store boost data, data itself not used yet

pymyenergi/zappi.py

@@ -43,6 +43,7 @@ def __init__(self, connection: Connection, serialno, data=None) -> None:
     async def refresh(self):
         """Refresh device data"""
         self.data = await self.fetch_data()
+        self.boost_data = await self.fetch_boost_data()
 
     async def fetch_boost_data(self):
         """Fetch data from myenergi"""