[Opta] Load competitions dataframe more efficiently #678
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This commit improves the performance of the OptaLoader.competitions() method. Previously, this method was very slow when loading data from a directory with many data files, since it parsed every single file. This is solved by parsing only one file per competition-season pair.
probberechts
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This commit improves the performance of the OptaLoader.competitions() method. Previously, this method was very slow when loading data from a directory with many data files, since it parsed every single file. This is solved by parsing only one file per competition-season pair.