library.dataframes.BaseTraditional - move merge logic to child classes #313
+145
−87
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Updates the library traditional dataframes to move the full merge logic into a method in each of the 3 classes.
mergewas a shared method, callingsummarize_merged_dataframes&cast_datafame, also shared, both called with details from per-classunique_index_columns,data_columns&cast_typesthe abstraction makes sense, but we can remove extra complexity with it, and the result is a simple set of pandas instructions.
(Also drops the logic casting all indexes to objects.)
wip - test with #285