make the doctor command visible (#3505)

Author: jakemac53

build_runner/CHANGELOG.md

@@ -1,4 +1,6 @@
-## 2.4.3-wip
+## 2.4.3
+
+- Make the `doctor` command visible.
 
 ## 2.4.2
 

build_runner/lib/src/entrypoint/doctor.dart

@@ -21,9 +21,6 @@ class DoctorCommand extends BuildRunnerCommand {
   @override
   String get name => 'doctor';
 
-  @override
-  bool get hidden => true;
-
   @override
   String get description => 'Check for misconfiguration of the build.';
 

build_runner/pubspec.yaml

@@ -1,5 +1,5 @@
 name: build_runner
-version: 2.4.3-wip
+version: 2.4.3
 description: A build system for Dart code generation and modular compilation.
 repository: https://github.com/dart-lang/build/tree/master/build_runner