Create Changelog_CN.md

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20230409
修正训练参数提升显卡平均利用率A100最高从25%提升至90%左右V100:50%->90%左右2060S:60%->90%左右P40:25%->90%左右,训练速度显著提升
修正参数总batch_size改为每张卡的batch_size
修正total_epoch最大限制100解锁至1000默认10提升至默认20
修复ckpt提取识别是否带音高错误导致推理异常的问题
修复分布式训练每个rank都保存一次ckpt的问题
特征提取进行nan特征过滤