Update charted to 0.4.8 and roll

packages/csslib/CHANGELOG.md

+## 0.13.6
+
+* Adds support for `@viewport`.
+* Adds support for `-webkit-calc()` and `-moz-calc()`.
+* Adds support for querying media features without specifying an expression. For
+  example: `@media (transform-3d) { ... }`.
+* Prevents exception being thrown for invalid dimension terms, and instead
+  issues an error.
+
+## 0.13.5
+
+* Adds support for `@-moz-document`.
+* Adds support for `@supports`.
+
+## 0.13.4
+
+* Parses CSS 2.1 pseudo-elements as pseudo-elements instead of pseudo-classes.
+* Supports signed decimal numbers with no integer part.
+* Fixes parsing hexadecimal numbers when followed by an identifier.
+* Fixes parsing strings which contain unicode-range character sequences.
+
+## 0.13.3+1
+
+* Fixes analyzer error.
+
+## 0.13.3
+
+* Adds support for shadow host selectors `:host()` and `:host-context()`.
+* Adds support for shadow-piercing descendant combinator `>>>` and its alias
+  `/deep/` for backwards compatibility.
+* Adds support for non-functional IE filter properties (i.e. `filter: FlipH`).
+* Fixes emitted CSS for `@page` directive when body includes declarations and
+  page-margin boxes.
+* Exports `Message` from `parser.dart` so it's no longer necessary to import
+  `src/messages.dart` to use the parser API.
+
+## 0.13.2+2
+
+* Fix static warnings.
+
+## 0.13.2+1
+
+* Fix new strong mode error.
+
+## 0.13.2
+
+* Relax type of TreeNode.visit, to allow returning values from visitors.
+
+## 0.13.1
+
+* Fix two checked mode bugs introduced in 0.13.0.
+
+## 0.13.0
+
+ * **BREAKING** Fix all [strong mode][] errors and warnings.
+   This involved adding more precise on some public APIs, which
+   is why it may break users.
+
+[strong mode]: https://github.com/dart-lang/dev_compiler/blob/master/STRONG_MODE.md
+
 ## 0.12.2
 
  * Fix to handle calc functions however, the expressions are treated as a
    LiteralTerm and not fully parsed into the AST.
 
 ## 0.12.1
 
  * Fix to handling of escapes in strings.
 
 ## 0.12.0+1
@@ skipping 19 matching lines @@
 
 * Fix another test that was failing on IE10.
 
 ## 0.11.0+1
 
 * Fix a test that was failing on IE10.
 
 ## 0.11.0
 
 * Switch from `source_maps`' `Span` class to `source_span`'s `SourceSpan` class.