Avoid the recompilation trap that is unique!

Don't ask me why, but switching from using unique! to just plain unique
eliminates the recompilation that's been plaguing his package in 1.10+.

This has been a massive headache to track down, and I absolutely hate
that such a pitfall like this exists at all. Frankly, it's rather
disappointing to discover that I can't just take the safety/performance
of Base's API for granted.

src/unix.jl

@@ -57,12 +57,12 @@ function reload()
     @setxdg TEMPLATES_DIR   get(userdirs, :XDG_TEMPLATES_DIR,   "~/Templates")
     @setxdg PUBLICSHARE_DIR get(userdirs, :XDG_PUBLICSHARE_DIR, "~/Public")
     # Other directories
-    FONTS_DIRS[] =
-        append!([joinpath(DATA_HOME[], "fonts"), expanduser("~/.fonts")],
-                [joinpath(d, "fonts") for d::String in DATA_DIRS[]]) |> unique!
-    APPLICATIONS_DIRS[] =
-        append!([joinpath(DATA_HOME[], "applications")],
-                [joinpath(d, "applications") for d::String in DATA_DIRS[]]) |> unique!
+    FONTS_DIRS =
+        append!([joinpath(DATA_HOME, "fonts"), expanduser("~/.fonts")],
+                [joinpath(d, "fonts") for d::String in DATA_DIRS]) |> unique
+    APPLICATIONS_DIRS =
+        append!([joinpath(DATA_HOME, "applications")],
+                [joinpath(d, "applications") for d::String in DATA_DIRS]) |> unique
     nothing
 end