Bump version to 0.2.0

Author: katelouie

src/stellium/__init__.py

@@ -13,7 +13,7 @@
     >>> chart = ChartBuilder.from_native(native).calculate()
 """
 
-__version__ = "0.1.0"
+__version__ = "0.2.0"
 
 # === Core Building Blocks (Most Common) ===
 # === Convenience Re-exports ===