{erl_opts, [inline, {platform_define, "^2[0-9]", 'HAVE_UNICODE_ATOM'}]}.
{edoc_opts, [{subpackages, false}, {preprocess, true}]}.
{xref_checks, [undefined_function_calls,
               undefined_functions,
               locals_not_used,
               deprecated_function_calls,
               deprecated_functions]}.