Cargo Features

roadblk-attr has no features set by default.

[dependencies]
roadblk-attr = { version = "0.2.0", features = ["core", "proc"] }
core = serde
proc = procmeta

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

procmeta proc?
serde core?