Rename dependencies to their crate names

Keep the old names but deprecate them so we can remove them in 0.4.

Cargo.toml

@@ -38,9 +38,12 @@ required-features = ["parkinglot"]
 default = ["backtraces"]
 backtraces = []
 experimental = []
-# Feature names do not match crate names pending namespaced features.
+lock_api = ["dep:lock_api"]
+parking_lot = ["dep:parking_lot", "lock_api"]
+
+# Deprecated feature names from when cargo couldn't distinguish between dep and feature
 lockapi = ["lock_api"]
-parkinglot = ["parking_lot", "lockapi"]
+parkinglot = ["parking_lot"]
 
 [build-dependencies]
 autocfg = "1.4.0"