Splice in project template

I tried to merge it so that future updates from the template will be
much easier.

The template is hosted at:
https://github.com/ethereum/ethereum-python-project-template

pyproject.toml

@@ -1,3 +1,46 @@
+[tool.towncrier]
+# Read https://github.com/ethereum/<REPO_NAME>/newsfragments/README.md for instructions
+package = "<MODULE_NAME>"
+filename = "docs/release_notes.rst"
+directory = "newsfragments"
+underlines = ["-", "~", "^"]
+issue_format = "`#{issue} <https://github.com/ethereum/<REPO_NAME>/issues/{issue}>`__"
+
+[[tool.towncrier.type]]
+directory = "feature"
+name = "Features"
+showcontent = true
+
+[[tool.towncrier.type]]
+directory = "bugfix"
+name = "Bugfixes"
+showcontent = true
+
+[[tool.towncrier.type]]
+directory = "performance"
+name = "Performance improvements"
+showcontent = true
+
+[[tool.towncrier.type]]
+directory = "doc"
+name = "Improved Documentation"
+showcontent = true
+
+[[tool.towncrier.type]]
+directory = "removal"
+name = "Deprecations and Removals"
+showcontent = true
+
+[[tool.towncrier.type]]
+directory = "internal"
+name = "Internal Changes - for <PROJECT_NAME> Contributors"
+showcontent = true
+
+[[tool.towncrier.type]]
+directory = "misc"
+name = "Miscellaneous changes"
+showcontent = false
+
 [tool.black]
 target_version = ['py37']
 include = '\.pyi?$'