Restore command usage in --help output

Author: jwodder

CHANGELOG.md

@@ -1,3 +1,7 @@
+v0.2.1 (in development)
+-----------------------
+- Restore command usage in `--help` output
+
 v0.2.0 (2022-10-18)
 -------------------
 - Update clap dependency to 4.0

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "ghrepo"
-version = "0.2.0"
+version = "0.2.1-dev"
 edition = "2021"
 rust-version = "1.60"
 description = "Parse & construct GitHub repository URLs & specifiers"
@@ -12,7 +12,7 @@ categories = ["command-line-utilities"]
 exclude = ["/.*"]
 
 [dependencies]
-clap = { version = "4.0.15", default-features = false, features = ["derive", "std", "suggestions", "wrap_help"] }
+clap = { version = "4.0.15", default-features = false, features = ["derive", "error-context", "help", "std", "suggestions", "wrap_help", "usage"] }
 fancy-regex = "0.10.0"
 lazy_static = "1.4.0"
 serde = "1.0.145"