Release dirs 2.0.1, depend on dirs-sys 0.3.3

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name        = "dirs"
-version     = "2.0.0"
+version     = "2.0.1"
 authors     = ["Simon Ochsenreither <simon@ochsenreither.de>"]
 description = "A tiny low-level library that provides platform-specific standard locations of directories for config, cache and other data on Linux, Windows, macOS and Redox by leveraging the mechanisms defined by the XDG base/user directory specifications on Linux, the Known Folder API on Windows, and the Standard Directory guidelines on macOS."
 readme      = "README.md"
@@ -11,4 +11,4 @@ keywords    = ["xdg", "basedir", "app_dirs", "path", "folder"]
 
 [dependencies]
 cfg-if = "0.1"
-dirs-sys = "0.3.1"
+dirs-sys = "0.3.3"