- shared mode uses one optimizer with shared results
- multi mode runs as many optimizers as jobs and results are
only shared on ask
- a flag to override the strategy when asking more points (--lie-strat)
- make sure to ask with n_points `None` to avoid computing more
points than needed in shared mode
- reduce n of models to 1 in multi mode
- don't load more than the specified number of jobs when loading previous optimizers
- stretch the batch length to reach the epochs limit
- a warning for when no epochs are logged
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