Updated dependencies

- SVN 0.3.43 → ~0.3 (which installed 0.3.46 and needed some fixes)
- mkdocs 0.17.2 → ~1.0 (which installed 1.0.4)
- mkdocs-material 2.2.2 → ~4.2 (which installed 4.2.0)

pyproject.toml

@@ -12,12 +12,12 @@ include = ["readme.md", "LICENSE.txt"]
 [tool.poetry.dependencies]
 python = "~3.6"
 pillar = {path = "../pillar"}
-svn = "0.3.43"
+svn = "~0.3"
 
 [tool.poetry.dev-dependencies]
 pillar-devdeps = {path = "../pillar/devdeps"}
-mkdocs = "0.17.2"
-mkdocs-material = "2.2.2"
+mkdocs = "~1.0"
+mkdocs-material = "~4.2"
 
 [build-system]
 requires = ["poetry>=0.12"]