@zooqooo I forget that Factorio has two version-constraint fields and base>=2.0.0 isn't enough to say "I work with 2.1 too". But it turns out that no, it didn't work in 2.1 without changes.
@snouz yeah I went looking through changelogs a bit and downloaded 2.1.9 to test.
I got the mod loading again and made sure logistic robots visually go to roughly the right location on both warehouse & storehouse buildings. Circuit wire connectors look at least close enough to 2.0 that I can't tell a difference.
Would help me a lot if folks in this thread (snouz, Ruindar, zooqooo, plus anyone else still interested) could test out the changes. I will upload a test build to the pull request here: https://github.com/Warehousing/Warehousing/pull/127