Merge pull request #283 from ray-ruisun/patch-1

Update base_logger.py

optimize import scenarios

optimize import datasets

optimize import tasks

optimize import rehearsal

merge

black reformating

update gitignore

Merge pull request #280 from thomas-bouvier/update-dev-deps

Move package `prospector` to dev dependencies

Merge pull request #270 from Continvvm/fix_metrics

fix forward transfer

Merge branch 'master' of https://github.com/Continvvm/continuum

full path for images to be compatible with pypi