Add missing 'self' arg to abstract method

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 ### Changed
 - Quiet unused(?), common, logging messages to terminal. ([PR #14](https://github.com/ClimateImpactLab/dscim/pull/14), [@brews](https://github.com/brews))
+### Fixed
+- Add missing `self` arg to `global_consumption_calculation` abstract method. ([PR #43](https://github.com/ClimateImpactLab/dscim/pull/43), [@brews](https://github.com/brews))
 
 ## [0.1.0] - 2022-08-30
 - Initial release.

src/dscim/menu/main_recipe.py

@@ -768,7 +768,7 @@ def median_params_marginal_damages(self):
         return median_params_marginal_damages
 
     @abstractmethod
-    def global_consumption_calculation(disc_type):
+    def global_consumption_calculation(self, disc_type):
         """Calculation of global consumption without climate change
 
         Returns