changelog: add for 0.9.0

CHANGELOG.md

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 78f9895..d57f6bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.9.0 (Unreleased)
+
+* logrus/text_formatter: don't emit empty msg
+
 # 0.8.7
 
 * logrus/core: fix possible race (#216)