add black line limit to pyproject

pyproject.toml

@@ -24,7 +24,7 @@ h5py = "2.10"
 imageio = "2.8.0"
 omero-py = ">=5.6.2"
 zeroc-ice = "3.6.5"
-aliby-agora = "^0.2.23"
+aliby-agora = "^0.2.28"
 aliby-baby = "^0.1.7"
 aliby-post = "^0.1.26"
 p-tqdm = "^1.3.3"
@@ -42,3 +42,13 @@ numpydoc = "^1.3.1"
 [build-system]
 requires = ["setuptools", "poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
+
+[tool.black]
+line-length = 79
+target-version = ['py37']
+include = '\.pyi?$'
+extend-exclude = '''
+# A regex preceded with ^/ will apply only to files and directories
+# in the root of the project.
+^/foo.py  # exclude a file named foo.py in the root of the project (in addition to the defaults)
+'''