docs(changelog): add #962 template func maps

CHANGELOG.md

@@ -7,6 +7,7 @@
 - [NEW] Improve README examples and add extra at examples folder
 - [NEW] Improved support with App Engine
 - [NEW] Add custom template delimiters, see #860
+- [NEW] Add Template Func Maps, see #962
 - [NEW] Add \*context.Handler(), see #928
 - [NEW] Add \*context.GetRawData()
 - [NEW] Add \*context.GetHeader() (request)
@@ -14,6 +15,7 @@
 - [NEW] Add \*context.Keys type cast helpers
 - [NEW] Add \*context.ShouldBindWith()
 - [NEW] Add \*context.MustBindWith()
+- [NEW] Add \*engine.SetFuncMap()
 - [DEPRECATE] On next release: \*context.BindWith(), see #855
 - [FIX] Refactor render
 - [FIX] Reworked tests