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PP309: Filter warnings specified

Author: DimitriPapadopoulos

pyproject.toml

@@ -66,6 +66,7 @@ testpaths = ["tests"]
 log_level = "INFO"
 xfail_strict = true
 addopts = ["-ra", "--strict-config", "--strict-markers"]
+filterwarnings = ["error"]
 norecursedirs = ["data"]
 doctest_optionflags = ["NORMALIZE_WHITESPACE", "IGNORE_EXCEPTION_DETAIL"]