Use hard links for multiple folder placement (tag paths)

[CNG]

For the record, on two of these posts about this issue it was commented as recently as 2019-03-24 that this is coming in Insync 3:

• Files in mutiple locations on google drive (shift+z)
• Use hard links for multiple folder placement (tag paths)
• Files in several Google Drive folders are missed in original folder
• A File in multiple Google Drive folders--which folder does insync sync the file to?