Merge branch 'common/image-perturbators' into 'master'

...set/perturbations/perturbator_functions/gaussian_noise.py

...et/perturbations/perturbator_functions/horizontal_blur.py

...dataset/perturbations/perturbator_functions/saturation.py

robots-at-runes/research/robots_at_runes/__init__.py

robots-at-runes/research/robots_at_runes/constants.py

robots-at-runes/research/robots_at_runes/dataset/__init__.py

...-runes/research/robots_at_runes/dataset/blend/__init__.py

...esearch/robots_at_runes/dataset/blend/examples/.gitignore

...research/robots_at_runes/dataset/blend/examples/back1.jpg

.../research/robots_at_runes/dataset/blend/examples/logo.png

.../research/robots_at_runes/dataset/blend/examples/logo.xml

...s/research/robots_at_runes/dataset/blend/image_blender.py

...t_runes/dataset/blend/labeled_image_modifiers/__init__.py

...end/labeled_image_modifiers/labeled_image_modifier_abc.py

...et/blend/labeled_image_modifiers/labeled_image_rotator.py

...set/blend/labeled_image_modifiers/labeled_image_scaler.py

...nes/research/robots_at_runes/dataset/dataset_generator.py

...t-runes/research/robots_at_runes/dataset/labeled_image.py