* delete all parrots file
add bbox_overlaps new parrots op impl
* support first new impl parrts op (bbox_overlaps)(success test)
* add box_iou_rotated op, test succeed
* add carafe and carafe_naive op, test succeed (one parrots bug need fix)
* add cc_attention op, test success
* add corner_pool op, test success
* add parrots op deform_conv, test success
* add deform_roi_pool op, test success (but has question)
* add focal loss op, test success (gradcheck)
* add masked_conv2d op, test success
* add modulated_deform_conv op, test success
* add nms and nms_rotated op, test success
* add psamask op, test success
* add roi_align op, test_success
* add roi_pool op, test success
* add sync_bn op, test success
* add tin_shift op, test success
* fix test_deform_roi_pool, add parrots test
* skip test_onnx because parrots does not support onnx
* fix c++ lint
* fix python lint
* fix python lint
* add ext ops, support parrots
* fix lint
* fix lint
* update op from mmdetection
* support non-pytorch env
* fix import bug
* test not import mmcv.op
* rename mmcv.op to mmcv.ops
* fix compile warning
* 1. fix syncbn warning in pytorch 1.5
2. support only cpu compile
3. add point_sample from mmdet
* fix text bug
* update docstrings
* fix line endings
* minor updates
* remove non_local from ops
* bug fix for nonlocal2d
* rename ops_ext to _ext and _ext to _flow_warp_ext
* update the doc
* try clang-format github action
* fix github action
* add ops to api.rst
* fix cpp format
* fix clang format issues
* remove .clang-format
Co-authored-by: Kai Chen <chenkaidev@gmail.com>
z55250825
zhuyuanhao