use macros rc version

Cargo.toml

@@ -17,7 +17,7 @@ arc-swap        = "^1.6"
 crossbeam-epoch = "^0.9"
 crossbeam-utils = "^0.8"
 log             = "^0.4"
-rotonda-macros  = { git = "https://github.com/NLnetLabs/rotonda-macros", branch = "indexed-multi-map" }
+rotonda-macros  = { version = "0.4.0-rc0" }
 routecore       = { version = "0.5.0-rc1", features = ["bgp", "bmp", "fsm", "serde"] }
 
 inetnum     = { version = "*", features = ["arbitrary", "serde"] }