v0.2.7
[hotfix] skipped unsafe test cases (#1282)
[CheckpointIO] a uniform checkpoint I/O module (#1689)
[utils] Add use_reetrant=False in utils.activation_checkpoint (#1460)
[hotfix] fix a running error in test_colo_checkpoint.py (#1387)
[gemini] add GeminiMemoryManger (#832)
updated attention kernel (#2133)
[utils] integrated colotensor with lazy init context (#1324)
[test] ignore 8 gpu test (#1080)
[Doc] add more doc for ColoTensor. (#1458)
[test] refactored with the new rerun decorator (#763)