Update charted to 0.4.8 and roll

packages/logging/CHANGELOG.md

+## 0.11.3+1
+
+* Fixed several documentation comments.
+
+## 0.11.3
+
+* Added optional `LogRecord.object` field.
+
+* `Logger.log` sets `LogRecord.object` if the message is not a string or a
+  function that returns a string. So that a handler can access the original
+  object instead of just its `toString()`.
+
 ## 0.11.2
 
-* Added Logger.detached - a convinience factory to obtain a logger that is not
+* Added Logger.detached - a convenience factory to obtain a logger that is not
   attached to this library's logger hierarchy.
 
 ## 0.11.1+1
 
 * Include default error with the auto-generated stack traces.
 
 ## 0.11.1
 
 * Add support for automatically logging the stack trace on error messages. Note
   this can be expensive, so it is off by default.
 
 ## 0.11.0
 
 * Revert change in `0.10.0`. `stackTrace` must be an instance of `StackTrace`.
   Use the `Trace` class from the [stack_trace package][] to convert strings.
 
 [stack_trace package]: https://pub.dartlang.org/packages/stack_trace
 
 ## 0.10.0
 
 * Change type of `stackTrace` from `StackTrace` to `Object`.
 
 ## 0.9.3
 
 * Added optional `LogRecord.zone` field.
 
 * Record current zone (or user specified zone) when creating new `LogRecord`s.