Slashes removed in #380

[karajan9]

Describe the bug
PR #380 removed a trailing slash from projectdir and, by extension, datadir etc. This is breaking for me, since my paths aren't valid anymore, while before they were.

Minimal Working Example

datadir("folder/")
Expected:
".../data/folder/"
Currently:
".../data/folder"

Since this breaks previously working code (in a patch release no less, 2.12.1 to 2.12.2) I believe this should be reverted.

[Datseris]

Yes, I'll fix this. Hm PR#380 was weird now that I think about it. the author made the change necessary to fix the original issue #181, but also changed the projectdir behavior. The projectdir change was not necessary as far as I can tell.

[karajan9]

Thanks for the instant fix and release! I can confirm this fixed the issue for me.