Time out on all my sensors
<!-- Provide a general summary in the Title above -->

### Expected Behavior
Everything should work as it did before.

### Current Behavior
Since the last homebridge update  I'm getting errors from this plugin that there's a timeout on all my sensors. I read that it could be that the sensor is out of range but I'm having the issue on all of them. It starts working perfectly but after a couple of hours they just stop transmitting data to the pi.

### Steps to Reproduce (for bugs)
Start homebridge and wait...

### Versions
<!-- Please run commands and include versions below. -->
- **homebridge**: 0.4.50
- **homebridge-mi-hygrothermograph**: 2.2.1
- **node**: 8.6.0
- **OS**: Raspbian (latest)

### Configuration
 "accessories": [
        {
            "accessory": "Hygrotermograph",
            "name": "Slaapkamer",
            "address": "4C:65:A8:D7:94:03",
            "fakeGatoEnabled": "true",
            "forceDiscovering": "true"
        },
        {
            "accessory": "Hygrotermograph",
            "name": "Badkamer",
            "address": "4C:65:A8:D8:54:24",
            "fakeGatoEnabled": "true",
            "forceDiscovering": "true"
        },
        {
            "accessory": "Hygrotermograph",
            "name": "Fitness",
            "address": "4C:65:A8:DC:88:41",
            "fakeGatoEnabled": "true",
            "forceDiscovering": "true"
        }
    ],

### Homebridge Log / Command Output
[2019-6-14 10:45:31] [Badkamer] [4C:65:A8:D8:54:24] Timed out, last update: 2019-06-14T06:08:59.381Z
[2019-6-14 10:45:31] [Badkamer] [4C:65:A8:D8:54:24] Timed out, last update: 2019-06-14T06:08:59.381Z
[2019-6-14 10:45:31] [Badkamer] [4C:65:A8:D8:54:24] Timed out, last update: 2019-06-14T06:08:59.381Z
[2019-6-14 10:45:31] [Fitness] [4C:65:A8:DC:88:41] Timed out, last update: 2019-06-14T06:09:02.307Z
[2019-6-14 10:45:31] [Fitness] [4C:65:A8:DC:88:41] Timed out, last update: 2019-06-14T06:09:02.307Z
[2019-6-14 10:45:31] [Fitness] [4C:65:A8:DC:88:41] Timed out, last update: 2019-06-14T06:09:02.307Z
[2019-6-14 10:45:31] [Slaapkamer] [4C:65:A8:D7:94:03] Timed out, last update: 2019-06-14T06:09:02.383Z
[2019-6-14 10:45:31] [Slaapkamer] [4C:65:A8:D7:94:03] Timed out, last update: 2019-06-14T06:09:02.383Z
[2019-6-14 10:45:31] [Slaapkamer] [4C:65:A8:D7:94:03] Timed out, last update: 2019-06-14T06:09:02.383Z
