|  | ## 2.1.5 | 
|  |  | 
|  | * Fix a bug with 2.1.4 where source span information was being discarded for | 
|  | scalar values. | 
|  |  | 
|  | ## 2.1.4 | 
|  |  | 
|  | * Substantially improve performance. | 
|  |  | 
|  | ## 2.1.3 | 
|  |  | 
|  | * Add a hint that a colon might be missing when a mapping value is found in the | 
|  | wrong context. | 
|  |  | 
|  | ## 2.1.2 | 
|  |  | 
|  | * Fix a crashing bug when parsing block scalars. | 
|  |  | 
|  | ## 2.1.1 | 
|  |  | 
|  | * Properly scope `SourceSpan`s for scalar values surrounded by whitespace. | 
|  |  | 
|  | ## 2.1.0 | 
|  |  | 
|  | * Rewrite the parser for a 10x speed improvement. | 
|  |  | 
|  | * Support anchors and aliases (`&foo` and `*foo`). | 
|  |  | 
|  | * Support explicit tags (e.g. `!!str`). Note that user-defined tags are still | 
|  | not fully supported. | 
|  |  | 
|  | * `%YAML` and `%TAG` directives are now parsed, although again user-defined tags | 
|  | are not fully supported. | 
|  |  | 
|  | * `YamlScalar`, `YamlList`, and `YamlMap` now expose the styles in which they | 
|  | were written (for example plain vs folded, block vs flow). | 
|  |  | 
|  | * A `yamlWarningCallback` field is exposed. This field can be used to customize | 
|  | how YAML warnings are displayed. | 
|  |  | 
|  | ## 2.0.1+1 | 
|  |  | 
|  | * Fix an import in a test. | 
|  |  | 
|  | * Widen the version constraint on the `collection` package. | 
|  |  | 
|  | ## 2.0.1 | 
|  |  | 
|  | * Fix a few lingering references to the old `Span` class in documentation and | 
|  | tests. | 
|  |  | 
|  | ## 2.0.0 | 
|  |  | 
|  | * Switch from `source_maps`' `Span` class to `source_span`'s `SourceSpan` class. | 
|  |  | 
|  | * For consistency with `source_span` and `string_scanner`, all `sourceName` | 
|  | parameters have been renamed to `sourceUrl`. They now accept Urls as well as | 
|  | Strings. | 
|  |  | 
|  | ## 1.1.1 | 
|  |  | 
|  | * Fix broken type arguments that caused breakage on dart2js. | 
|  |  | 
|  | * Fix an analyzer warning in `yaml_node_wrapper.dart`. | 
|  |  | 
|  | ## 1.1.0 | 
|  |  | 
|  | * Add new publicly-accessible constructors for `YamlNode` subclasses. These | 
|  | constructors make it possible to use the same API to access non-YAML data as | 
|  | YAML data. | 
|  |  | 
|  | * Make `YamlException` inherit from source_map's [`SpanFormatException`][]. This | 
|  | improves the error formatting and allows callers access to source range | 
|  | information. | 
|  |  | 
|  | [SpanFormatException]: (http://www.dartdocs.org/documentation/source_maps/0.9.2/index.html#source_maps/source_maps.SpanFormatException) | 
|  |  | 
|  | ## 1.0.0+1 | 
|  |  | 
|  | * Fix a variable name typo. | 
|  |  | 
|  | ## 1.0.0 | 
|  |  | 
|  | * **Backwards incompatibility**: The data structures returned by `loadYaml` and | 
|  | `loadYamlStream` are now immutable. | 
|  |  | 
|  | * **Backwards incompatibility**: The interface of the `YamlMap` class has | 
|  | changed substantially in numerous ways. External users may no longer construct | 
|  | their own instances. | 
|  |  | 
|  | * Maps and lists returned by `loadYaml` and `loadYamlStream` now contain | 
|  | information about their source locations. | 
|  |  | 
|  | * A new `loadYamlNode` function returns the source location of top-level scalars | 
|  | as well. | 
|  |  | 
|  | ## 0.10.0 | 
|  |  | 
|  | * Improve error messages when a file fails to parse. | 
|  |  | 
|  | ## 0.9.0+2 | 
|  |  | 
|  | * Ensure that maps are order-independent when used as map keys. | 
|  |  | 
|  | ## 0.9.0+1 | 
|  |  | 
|  | * The `YamlMap` class is deprecated. In a future version, maps returned by | 
|  | `loadYaml` and `loadYamlStream` will be Dart `HashMap`s with a custom equality | 
|  | operation. |