updated changelog for 0.4.9 release

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Mosaic CHANGELOG
 
+### 0.4.9
+- **bug fixing** : fixed file delete error form patch data folder when loading new patch
+- **bug fixing** : _osc sender_ throw out of range on reloading patch [68bc8a42](https://github.com/d3cod3/ofxVisualProgramming/commit/68bc8a42602374ee4fe8325b39a08493bc4550e2)
+- **feature** : added rescan devices button to MIDI send/receive objects [dae4f6d](https://github.com/d3cod3/ofxVisualProgramming/commit/dae4f6de2eca90ed1f06fa8efbee4c684ce445be)
+- **enhancement** : added [tracy profiler](https://github.com/wolfpld/tracy) for solid debug and profiling, as submodule
+- **serialization** : added app release reference in patch files
+
 ### 0.4.8
 - better retina screen detection
 - upgraded openGL to 4.1