Change getRange to sublist. Make getRange deprecated.

utils/pub/pub.dart

Index: utils/pub/pub.dart
diff --git a/utils/pub/pub.dart b/utils/pub/pub.dart
index 1c7830b9535c010d1963e53b2252cc7b2fc5b629..1c05c45b977acf5a48f87bc588ea6d9741b4a09c 100644
--- a/utils/pub/pub.dart
+++ b/utils/pub/pub.dart
@@ -137,8 +137,7 @@ main() {
       return;
     }
 
-    var commandArgs =
-        globalOptions.rest.getRange(1, globalOptions.rest.length - 1);
+    var commandArgs = globalOptions.rest.sublist(1);
     command.run(cache, globalOptions, commandArgs);
   });
 }