Apply isort Mk II (#942)

* Apply isort!

pyproject.toml

@@ -40,6 +40,15 @@ pyflakes = "^2.2.0"
 [tool.poetry.scripts]
 jrnl = 'jrnl.cli:run'
 
+[tool.isort]
+multi_line_output = 3
+include_trailing_comma = true
+force_grid_wrap = 0
+use_parentheses = true
+line_length = 88
+known_first_party = ["jrnl", "behave"]
+force_sort_within_sections = true
+
 [build-system]
 requires = ["poetry>=0.12"]
 build-backend = "poetry.masonry.api"