Update changelog

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 44b2050733249bbed68b76cdaf537f05fda93dea..4ae2496b81b5eacd81fa8a6fc7209e58216ac9a5 100644 (file)
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@ The format is based on [Keep a Changelog][] and this project adheres to
   nodes to goal.
 - OpenGL 2.1 plot using SDL2.
 - `nn4` procedure - set node's heading to heading of currently comparing node.
+- Add optimize path method based on [Islam2012]'s *Path Optimize* procedure.
 
 ### Changed
 - Build with Ninja.