allow specifying multi-scale random mode

modify the range of bbox in BboxTransform

Allow gt_bboxes_ignore for RPN and single-stage detectors

Fix variable conv kernel size in mask head

* Update inference.py

fix inference bug, the default keep_ratio is True...But SSD should be false

* Update inference.py

format correct

* Update inference.py

A more stable way

* Update inference.py

* Update inference.py

fix dcn in BasicBlock

Minor fix for dcn check in the backbone

Correct mirror site links

Bug fix for rpn proposal visualization

* correct typo

* correct registry typo

* remove f-string

* readme.md

Bug fix for ignored bboxes and support different iof computation

Bug fix for retinanet with 2 classes (fg/bg)

Support Pytorch 1.0

The last release on PyTorch 0.4.1

sync pytorch-1.0 with master branch

Add dcn group param support

fix a little bug in coco datasets loader

minor fix, print_map_summary