wip: basic support for scheduled rendering

packages/core-macro/Cargo.toml

@@ -13,7 +13,6 @@ proc-macro = true
 
 [dependencies]
 once_cell = "1.7.2"
-proc-macro-hack = "0.5.19"
 proc-macro2 = { version = "1.0.6" }
 quote = "1.0"
 syn = { version = "1.0.11", features = ["full", "extra-traits"] }