GitLab

* First draft

* More improvements

* Add backbone, first draft of ViT hybrid

* Add AutoBackbone

* More improvements

* Fix bug

* More improvements

* More improvements

* Convert ViT-hybrid

* More improvements

* add patch bit

* Fix style

* Improve code

* cleaned v1

* more cleaning

* more refactoring

* Improve models, add tests

* Add docs and tests

* Make more tests pass

* Improve default backbone config

* Update model_type

* Fix more tests

* Add more copied from statements

* More improvements

* Add push to hub to conversion scripts

* clean

* more cleanup

* clean

* replace to

* fix

* Update src/transformers/models/bit/configuration_bit.py
Co-authored-by: NielsRogge <48327001+NielsRogge@users.noreply.github.com>

* fix base model prefix

* more cleaning

* get rid of stem

* clean

* replace flag

* Update src/transformers/models/bit/configuration_bit.py
Co-authored-by: NielsRogge <48327001+NielsRogge@users.noreply.github.com>

* Update src/transformers/models/bit/configuration_bit.py
Co-authored-by: NielsRogge <48327001+NielsRogge@users.noreply.github.com>

* add check

* another check

* fix for hybrid vit

* final fix

* update config

* fix class name

* fix `make fix-copies`

* remove `use_activation`

* Update src/transformers/models/bit/configuration_bit.py

* rm unneeded file

* Add BiT image processor

* rm unneeded file

* add doc

* Add image processor to conversion script

* Add ViTHybrid image processor

* Add resources

* Move bit to correct position

* Fix auto mapping

* Rename hybrid to Hybrid

* Fix name in toctree

* Fix READMEs'

* Improve config

* Simplify GroupNormActivation layer

* fix test + make style

* Improve config

* Apply suggestions from code review
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>

* remove comment

* remove comment

* replace

* replace

* remove all conv_layer

* refactor norm_layer

* revert x

* add copied from

* last changes + integration tests

* make fixup

* Apply suggestions from code review
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* fix name

* fix message

* remove assert and refactor

* refactor + make fixup

* refactor - add  + sfety checker

* fix docstring + checkpoint names

* fix merge issues

* fix function name

* fix copies

* Apply suggestions from code review
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* fix model checkpoint

* fix doctest output

* vit name on doc

* fix name on doc

* fix small nits

* fixed integration tests

* final changes - slow tests pass
Co-authored-by: Niels Rogge <nielsrogge@Nielss-MacBook-Pro.local>
Co-authored-by: younesbelkada <younesbelkada@gmail.com>
Co-authored-by: Younes Belkada <49240599+younesbelkada@users.noreply.github.com>
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>