Change the number of days that data is kept for

[TonyM1958]

Starting with v.1.4.7, the recorder setting 'purge_keep_days' has been moved into 'secrets.yaml' so you can set / change this from the default if needed.

Add the following key to your 'secrets.yaml' file:

purge_keep_days: 30

You will need to add this after installing and before restarting or you will get a configuration error.