I changed the default value from true to false.
Previously, a fresh install of River5 would start downloading a large number of podcasts, this wasn't good, so now it won't do that.
To get the update,
1. cd into the directory that you're running River5 from.
2. npm update
That will get you the new version of davereader package.
Then quit and relaunch River5.
BTW, this is where the change was made --
Dave