* no data to export ([170](https://github.com/opendatalab/labelU/issues/170)) ([18825a0](https://github.com/opendatalab/labelU/commit/18825a09bfe13a64f5cffa9572dacc78cfa26a6c)) * rect tool minWidth validation ([0e934f8](https://github.com/opendatalab/labelU/commit/0e934f8820a7b38e54280740b1e62b9cb4aca83a))
* add is_pre_annotated field to the sample response ([166](https://github.com/opendatalab/labelU/issues/166)) ([653b298](https://github.com/opendatalab/labelU/commit/653b29846438c15130720cd4c4d6636a9b56073f)) * show is_pre_annotated in frontend ([1474e26](https://github.com/opendatalab/labelU/commit/1474e26256f18f8785a069947e6db23b38c14214))