CHANGELOG updated

docs/CHANGELOG.md

@@ -7,6 +7,7 @@
   - Added STL random number distribution wrappers (thanks [@yasamoka](https://github.com/yasamoka))
   - `math.h` function signatures refactored to use a `Quantity` concept (thanks [@kwikius](https://github.com/kwikius))
   - FPS system added (thanks [@mikeford3](https://github.com/mikeford3))
+  - `quantity_point` support added (thanks [@johelegp](https://github.com/johelegp))
 
 - **0.5.0 May 17, 2020**
   - Major refactoring and rewrite of the library