Cleanup/moving around config inputs sections for 1.15 changelog

CHANGELOG.md

Index: CHANGELOG.md
diff --git a/CHANGELOG.md b/CHANGELOG.md
index aec75414e0c00f8fd7508bff70ef36a7da624ca1..c38a97d15ff2844031df7eff6f7b57d772f83f16 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,17 +1,5 @@
 ## 1.15.0
 
-### Language features
-* Added support for [configuration-specific imports](https://github.com/munificent/dep-interface-libraries/blob/master/Proposal.md).
-  On the VM and dart2js, they can be enabled with `--conditional-directives`.
-
-  The analyzer requires an additional option in an `options` file:
-  ```yaml
-  analyzer:
-    language:
-      enableConditionalDirectives: true
-  ```
-  Then run the analyzer with `--options=<path-to-options-file>`.
-
 ### Core library changes
 
 * `dart:async`
@@ -40,6 +28,21 @@
 * Fixed a documentation bug where the field `extensionRPCs` in `Isolate`
   was not marked optional.
 
+### Experimental language features
+  * Added support for [configuration-specific imports](https://github.com/munificent/dep-interface-libraries/blob/master/Proposal.md).
+    On the VM and `dart2js`, they can be enabled with `--conditional-directives`.
+
+    The analyzer requires additional configuration:
+    ```yaml
+    analyzer:
+      language:
+        enableConditionalDirectives: true
+    ```
+
+    Read about [configuring the analyzer] for more details.
+
+[configuring the analyzer]: https://github.com/dart-lang/sdk/tree/master/pkg/analyzer#configuring-the-analyzer
+
 ## 1.14.2 - 2016-02-09
 
 * Fixes a bug where pub would download packages from pub.dartlang.org even when