v1.20(29)

• Added possibility to apply a conversion factor to PurpleAir AQI readings to account for the different density of wood smoke versus dust for example. The methodology is per US EPA, and can be enabled in the Preferences menu (and will show a fire symbol) - many thanks to HiddenJester for suggestion
• Added possibility to decrease time interval of data refresh from 20 minutes to 10 minutes. Note when operating at the increased frequency, the 1 Hour Forecast functionality is disabled (running out of data calls to the provider of this data as it is...). Many thanks to Drew U for the suggestion
• Also a small update - when showing PurpleAir data, it shows the average sensor reading rather than specifically the A channel, which should allow for more stable readings (only really affects the PM2.5 reading)