Explicitly create features with same name as optional dependencies

Author: faern

Cargo.toml

@@ -15,16 +15,17 @@ proc-macro = true
 [features]
 #! The crate provides a set of optional features that can be enabled in your `cargo.toml` file.
 #!
-## By default, only generate stdlib types.
-# The features for the optional dependencies "macaddr" and "ipnetwork" add extra functionality.
+## By default, only generate stdlib types
 default = []
+## enables generation of [`ipnetwork`] types
+ipnetwork = ["dep:ipnetwork"]
+## enables generation of [`macaddr`] types
+macaddr = ["dep:macaddr"]
 
 [dependencies]
 cfg-if = "1"
 document-features = { version = "0.2", optional = true }
-# Enable the "ipnetwork" feature to get const addr support for `ipnetwork` types
 ipnetwork = { version = "0.21.1", optional = true, default-features = false }
-# Enable the "macaddr" feature to get const addr support for `macaddr` types
 macaddr = { version = "1.0", optional = true }
 proc-macro-error = "1.0"
 proc-macro2 = "1"