switch mmlu variants over to using

lm_eval/tasks/mmlu/continuation/mmlu_high_school_chemistry.yaml

 "dataset_name": "high_school_chemistry"
 "description": "The following are questions (with answers) about high\
   \ school chemistry.\n\n"
-"group": "mmlu_continuation_stem"
+"tag": "mmlu_continuation_stem"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_chemistry"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_computer_science.yaml

 "dataset_name": "high_school_computer_science"
 "description": "The following are questions (with answers) about high\
   \ school computer science.\n\n"
-"group": "mmlu_continuation_stem"
+"tag": "mmlu_continuation_stem"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_computer_science"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_european_history.yaml

 "dataset_name": "high_school_european_history"
 "description": "The following are questions (with answers) about high\
   \ school european history.\n\n"
-"group": "mmlu_continuation_humanities"
+"tag": "mmlu_continuation_humanities"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_european_history"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_geography.yaml

 "dataset_name": "high_school_geography"
 "description": "The following are questions (with answers) about high\
   \ school geography.\n\n"
-"group": "mmlu_continuation_social_sciences"
+"tag": "mmlu_continuation_social_sciences"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_geography"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_government_and_politics.yaml

 "dataset_name": "high_school_government_and_politics"
 "description": "The following are questions (with answers) about high\
   \ school government and politics.\n\n"
-"group": "mmlu_continuation_social_sciences"
+"tag": "mmlu_continuation_social_sciences"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_government_and_politics"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_macroeconomics.yaml

 "dataset_name": "high_school_macroeconomics"
 "description": "The following are questions (with answers) about high\
   \ school macroeconomics.\n\n"
-"group": "mmlu_continuation_social_sciences"
+"tag": "mmlu_continuation_social_sciences"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_macroeconomics"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_mathematics.yaml

 "dataset_name": "high_school_mathematics"
 "description": "The following are questions (with answers) about high\
   \ school mathematics.\n\n"
-"group": "mmlu_continuation_stem"
+"tag": "mmlu_continuation_stem"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_mathematics"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_microeconomics.yaml

 "dataset_name": "high_school_microeconomics"
 "description": "The following are questions (with answers) about high\
   \ school microeconomics.\n\n"
-"group": "mmlu_continuation_social_sciences"
+"tag": "mmlu_continuation_social_sciences"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_microeconomics"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_physics.yaml

 "dataset_name": "high_school_physics"
 "description": "The following are questions (with answers) about high\
   \ school physics.\n\n"
-"group": "mmlu_continuation_stem"
+"tag": "mmlu_continuation_stem"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_physics"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_psychology.yaml

 "dataset_name": "high_school_psychology"
 "description": "The following are questions (with answers) about high\
   \ school psychology.\n\n"
-"group": "mmlu_continuation_social_sciences"
+"tag": "mmlu_continuation_social_sciences"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_psychology"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_statistics.yaml

 "dataset_name": "high_school_statistics"
 "description": "The following are questions (with answers) about high\
   \ school statistics.\n\n"
-"group": "mmlu_continuation_stem"
+"tag": "mmlu_continuation_stem"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_statistics"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_us_history.yaml

 "dataset_name": "high_school_us_history"
 "description": "The following are questions (with answers) about high\
   \ school us history.\n\n"
-"group": "mmlu_continuation_humanities"
+"tag": "mmlu_continuation_humanities"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_us_history"

lm_eval/tasks/mmlu/continuation/mmlu_high_school_world_history.yaml

 "dataset_name": "high_school_world_history"
 "description": "The following are questions (with answers) about high\
   \ school world history.\n\n"
-"group": "mmlu_continuation_humanities"
+"tag": "mmlu_continuation_humanities"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_high_school_world_history"

lm_eval/tasks/mmlu/continuation/mmlu_human_aging.yaml

 "dataset_name": "human_aging"
 "description": "The following are questions (with answers) about human\
   \ aging.\n\n"
-"group": "mmlu_continuation_other"
+"tag": "mmlu_continuation_other"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_human_aging"

lm_eval/tasks/mmlu/continuation/mmlu_human_sexuality.yaml

 "dataset_name": "human_sexuality"
 "description": "The following are questions (with answers) about human\
   \ sexuality.\n\n"
-"group": "mmlu_continuation_social_sciences"
+"tag": "mmlu_continuation_social_sciences"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_human_sexuality"

lm_eval/tasks/mmlu/continuation/mmlu_international_law.yaml

 "dataset_name": "international_law"
 "description": "The following are questions (with answers) about international\
   \ law.\n\n"
-"group": "mmlu_continuation_humanities"
+"tag": "mmlu_continuation_humanities"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_international_law"

lm_eval/tasks/mmlu/continuation/mmlu_jurisprudence.yaml

 "dataset_name": "jurisprudence"
 "description": "The following are questions (with answers) about jurisprudence.\n\
   \n"
-"group": "mmlu_continuation_humanities"
+"tag": "mmlu_continuation_humanities"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_jurisprudence"

lm_eval/tasks/mmlu/continuation/mmlu_logical_fallacies.yaml

 "dataset_name": "logical_fallacies"
 "description": "The following are questions (with answers) about logical\
   \ fallacies.\n\n"
-"group": "mmlu_continuation_humanities"
+"tag": "mmlu_continuation_humanities"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_logical_fallacies"

lm_eval/tasks/mmlu/continuation/mmlu_machine_learning.yaml

 "dataset_name": "machine_learning"
 "description": "The following are questions (with answers) about machine\
   \ learning.\n\n"
-"group": "mmlu_continuation_stem"
+"tag": "mmlu_continuation_stem"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_machine_learning"

lm_eval/tasks/mmlu/continuation/mmlu_management.yaml

 "dataset_name": "management"
 "description": "The following are questions (with answers) about management.\n\
   \n"
-"group": "mmlu_continuation_other"
+"tag": "mmlu_continuation_other"
 "include": "_continuation_template_yaml"
 "task": "mmlu_continuation_management"