docs: add missing changelog entries

Author: Martin Linkhorst

CHANGELOG.md

@@ -6,6 +6,8 @@
     - If kubernetes resource is deleted, then another resource may acquire DNS name
     - "Flapping" target issue is resolved by providing a consistent and defined mechanism for choosing a target
   - New `--zone-id-filter` parameter allows filtering by zone id (#422) @vboginskey
+  - TTL annotation check for azure records (#436) @stromming
+  - Switch from glide to dep (#435) @bkochendorfer
 
 ## v0.4.8 - 2017-11-22