toucan 2.1.0 dev 3: update now case sensitive

I used V2.0.6 until now and there only the previev window is case sensitive (for example the files pcu_20.abb and PCU_20.ABB are not the same).
But the sync-update function in 2.0.6 did not copy the files.

I now tested the 2.1.0 dev 3 and noticed that not only the previev is case sensitive but also the sync-update copies all the files.
Is it really neccesary to handle file names case sensitive?

I use toucan to synchronise/update notebooks with windows and unix servers, and
the unix server is the problem in this case (converts to lower case).

Thanks for help!