Bump dirs library from 0.3 -> 0.4
Latest version of dirs adds support for XDG_DATA_HOME.
@@ -35,7 +35,7 @@ clap = "2"
cylinder = { version = "0.2.2", features = ["key-load"] }
diesel = { version = "1.0", features = ["postgres"], optional = true }
diesel_migrations = "1.4"
-dirs = "3"
+dirs = "4"
flexi_logger = "0.17"
grid-sdk = { path = "../sdk", features = ["client", "client-reqwest", "data-validation"] }
libc = "0.2"
