Updated CHANGELOG for v1.2.0.

CHANGELOG.md

@@ -1,5 +1,34 @@
 # Changelog
 
+# v1.2.0
+
+This release provides solutions for [issue #1](https://github.com/manuelroemer/Nullable/issues/1) and
+[issue #6](https://github.com/manuelroemer/Nullable/issues/6). In addition, potential compiler
+warnings in the `NullableAttributes.cs` file are now hidden.
+
+**Upgrading:**
+
+Remove any previously defined `NULLABLE_ATTRIBUTES_EXCLUDE_FROM_CODE_COVERAGE` compiler constant,
+as it does not have any effect anymore.
+
+> :information_source: **Note:** <br/>
+> Builds will NOT break if the constant is still defined. It is simply ignored now.
+
+**Details:**
+
+* The package now supports `packages.config` via a `content/` folder in the NuGet package.
+* The attributes are now excluded from code coverage by default.
+  When referenced from projects targeting .NET Standard >= 2.0 or .NET Framework >= 4.0, the
+  `ExcludeFromCodeCoverageAttribute` is used. For other project types, the `DebuggerNonUserCodeAttribute`
+  is used.
+* Added support for the `NULLABLE_ATTRIBUTES_INCLUDE_IN_CODE_COVERAGE` compiler constant which
+  removes the code coverage attributes.
+* The `NULLABLE_ATTRIBUTES_EXCLUDE_FROM_CODE_COVERAGE` compiler constant no longer has
+  any effects. Code coverage is now disabled by default.
+* The `NullableAttributes.cs` file now wraps the attributes with a `#pragma warning disable` and
+  `#pragma warning restore` block to disable both compiler- and code-analysis warnings.
+
+
 # v1.1.1
 
 This release adds the `// <auto-generated>` header to the `NullableAttributes.cs` file so that