message: Bump syn, quote and proc-macro2 to v1.0
diff: @@ -13,9 +13,9 @@ edition = "2018"
  proc-macro = true
  [dependencies]
  -proc-macro2 = "0.4"
  -quote = "0.6"
  -syn = { version = "0.15", features = ["derive", "extra-traits"]}
  +proc-macro2 = "1.0"
  +quote = "^1.0.2"
  +syn = { version = "^1.0.5", features = ["derive", "extra-traits"]}
  [dev-dependencies]
  compiletest_rs = { version = "0.3.22", features = ["stable"] }
  