Bump up version to 0.9.0

Sinclert · Sinclert · commit 6d0e5f973681 · 2021-10-06T11:24:30.000-04:00
diff --git a/madminer/__info__.py b/madminer/__info__.py
@@ -6,4 +6,4 @@
     "Kyle Cranmer",
 ])
 
-__version__ = "0.8.3"
+__version__ = "0.9.0"
