Bump the changelog for 3.0.7

Author: stof

CHANGELOG-3.0.md

@@ -12,8 +12,9 @@ https://github.com/FriendsOfSymfony/FOSElasticaBundle/compare/v3.0.0...v3.0.1
 To generate a changelog summary since the last version, run
 `git log --no-merges --oneline v3.0.0...3.0.x`
 
-* 3.0.7 (Unreleased)
+* 3.0.7 (2015-01-21)
 
+ * Fixed the indexing of parent/child relations, broken since 3.0 #774
  * Fixed multi_field properties not being normalised #769
 
 * 3.0.6 (2015-01-04)