* Fix warning

* Add unittest

* add dygraph ptq and refine dygraph qat

* add unit test for ptq

* update according to comments

* Fix skipping leaves option
* Add unitests

* fix superbn

* update_check_ss

* update_check_ss

* update_check_ss

* ss_multi_output

* remove_some_comments

* Merge branch 'develop' of https://github.com/PaddlePaddle/PaddleSlim into update_check_ss

* merge_conflicts

* add_coverage

* new_export_func

* add_test

* remove_kernel_prune

* add_test_&_update_clear_ss

* fix key_error in pruner

* add unit test for get_ratios_by_loss

* add distill dirs

* fix unittest

* prune the optimizer in dygraph mode

* set opt when initializing pruner

* tests passed locally

* update Chinese docs and tutorials

* refine docs style

* avoid ambiguation in docs

* fix get sub model

* fix

* update

* update

* update include_self

* fix dist

* fix

* remove hook

* fix skip layers

* fix depthwise

* fix depthwise

* fix depthwise

* add gp_nas

* add_syncbn

* fix when kernel size is even

* fix name

* fix weight_op

Fix the error of save_quantized_model when weight_preprocess is PACT

* fix shortcut

* fix when kernel_size in ss

* fix export

* fix dp

* fix export model prune param twice

* add comment

* fix unittest

* fix

* update

* fix docs

* update

2. Add missing api index.rst
3. Fix comment in filter_pruner
4. Update links in API docs

Co-authored-by: NBai Yifan <me@ethanbai.com>

* add export model and depth

* Support for pruning training graph with auxiliary parameters

* Fix bugs

* Fix unitests.