Fix about_class_methods koan

[#54145703]
Fix about_message_passing koan

[#54145705]
Merge pull request #28 from bayendor/54145703_about_class_methods_master

Fix about_class_methods koan

[Delivers #54145703]
Merge pull request #29 from bayendor/54145705_about_message_passing_master

Fix about_message_passing koan

[Delivers #54145705]