[Bug] Some bugs.

[Evyde]

• Key 'version' in manifest.json should be added as issue Should add key 'version' to /custom_components/mitemp_bt2/manifest.json #4.
• Could not enable auto-discover, seems like a problem of scanning because my sensor would lost connection a few hours and I must use bluetooth scan on/off to scan it manually.
• Connection lost problem, same reason above.