Thank for your review and you support.

About :
- "it doesn't allow you to use Livebooksmarks in the way that Sage did":

Yes you are right. When I have started Drop Feeds I have tried to use Livebooksmarks, but with WebExtension API I haven't access to Livebooksmarks url, without url I can do nothing, then I have use classic bookmarks (but may be I have missed some thing, if any one reading that know then please tell me, but any way If I have well understood Livebooksmarks will be stopped in Firefox 64)


- "I wasn't able to change the folder it used from Drop Feeds to my old RSS Feeds folder for example, nor to the old default Sage Feeds folder":

Yes, you are right again. It 's because Sage was using Livebooksmarks, and like I said upper Drop Feeds can't manage them correctly with WebExtension API.
Then you have use OPML export from Sage and OPML import in Drop Feeds.


- missing important features like a way to mark all items in a feed read with a button.

To see the the items toolbar you have to check the option "Items/Feed item list toolbar", you will get a button to mark all items in a feed read.
But may be I haven't understood what you talk about, then me more about, and I will add the missing feature in the next version.

Thank you :-)