2.0.0

## What's Changed
* 修复lora/ft测试代码处传参错误的内容 by @Ayin1412 in https://github.com/OpenBMB/VoxCPM/pull/98
* perf: optimize dataset length calculation via batch column access by @jayll1303 in https://github.com/OpenBMB/VoxCPM/pull/128
* Add torchcodec to dependencies by @lrjerryli in https://github.com/OpenBMB/VoxCPM/pull/139
* Print debug messages to stderr instead of stdout by @vytskalt in https://github.com/OpenBMB/VoxCPM/pull/141
* Fix README's feature checkboxes by @zanellig in https://github.com/OpenBMB/VoxCPM/pull/147
* Improve CLI argument validation and help text by @s3ldc in https://github.com/OpenBMB/VoxCPM/pull/161
* Update train_voxcpm_finetune.py by @symhsym in https://github.com/OpenBMB/VoxCPM/pull/186
* fix: use specific exceptions instead of bare except by @haosenwang1018 in https://github.com/OpenBMB/VoxCPM/pull/188
* Add VoxCPM 2.

## New Contributors
* @Ayin1412 made their first contribution in https://github.com/OpenBMB/VoxCPM/pull/98
* @jayll1303 made their first contribution in https://github.com/OpenBMB/VoxCPM/pull/128
* @lrjerryli made their first contribution in https://github.com/OpenBMB/VoxCPM/pull/139
* @vytskalt made their first contribution in https://github.com/OpenBMB/VoxCPM/pull/141
* @zanellig made their first contribution in https://github.com/OpenBMB/VoxCPM/pull/147
* @s3ldc made their first contribution in https://github.com/OpenBMB/VoxCPM/pull/161
* @symhsym made their first contribution in https://github.com/OpenBMB/VoxCPM/pull/186
* @haosenwang1018 made their first contribution in https://github.com/OpenBMB/VoxCPM/pull/188

**Full Changelog**: https://github.com/OpenBMB/VoxCPM/compare/1.5.0...2.0.0