GitLab

* pad updated

* checked pad

* pad checked

* pad checked

* docs changed

Give a short example of how to build a transform pipeline for a
segmentation task.

* Add LinearTransformation to docs
- Arrange the transforms alphabetically

* Add missing transforms to docs

Add testing case with Pillow-SIMD, fix bug in RandomAffine if Pillow<5.0.0, add missing docs for affine (#439)

* add docs for grayscale + random grayscale transforms

PIL.Image is renamed to 'PIL Image' because PIL.Image is the module and PIL.Image.Image is the class we are referring but is too long to put in docstrings