Support the latest pkg/analyzer (#307)

Author: kevmoo

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.7.4+3
+
+* Support the latest `analyzer` package.
+
 ## 0.7.4+2
 
 * **BUG FIX**: `ConstantReader.revive()` now properly returns no URL fragment

pubspec.yaml

@@ -6,7 +6,7 @@ homepage: https://github.com/dart-lang/source_gen
 environment:
   sdk: '>=1.22.1 <2.0.0'
 dependencies:
-  analyzer: '>=0.29.10 <0.31.0'
+  analyzer: '>=0.29.10 <0.32.0'
   build: '>=0.10.0 <0.13.0'
   dart_style: '>=0.1.7 <2.0.0'
   meta: ^1.1.0