Many thanks for migrating addon to WebExtensions and making it compatible with Fx57+ :-). Do you think it is possible with current WE API to handle also bookmarks (for example in bookmarks toolbar)? **Edit: I didn't delete (at least intentionally) my previous review with your answer - it was automatically removed by AMO when I posted this one...
With the current API, not really. Technically, a WE can create its own sidebar and populate it with the bookmarks. BUT: it's a bit out of scope for LSR, it's a fair amount of effort for questionable gain, and it won't be as good as the native bookmarks sidebar anyway (no favicons; colors and folder etc. icons won't be OS/Firefox-themed).
