for the first acquaintance with git

Kugot Ekaterina 1fbd5c4376 Merge branch 'master' into test1 1 vuosi sitten
images 1fbd5c4376 Merge branch 'master' into test1 1 vuosi sitten
mask.py 42f1e0aefb add a file with an example of working with masks for images 1 vuosi sitten
nominal.py 1fbd5c4376 Merge branch 'master' into test1 1 vuosi sitten