User home dir shortcuts don't work

[ghostravenstorm]

Shortcuts to the user's home dir like %userprofile% on Windows and ~/ on Linux don't work as expected when summoning the open file panel.

var paths = SFB.StandaloneFileBrowser.OpenFilePanel("Open File", "%userprofile%", extensions, false);

Using %userprofile% for example opens the panel on the same executing dir with .../UnityApp/%userprofile%/ in the file name field.

Using C:/Users/user instead corrects this behaviour to open on the user's home dir be default as desired, but its silly to hardcode user names.