Add towncrier files

changelog.d/168.feature

@@ -0,0 +1 @@
+Use `towncrier` for changelog tracking

pyproject.toml

@@ -0,0 +1,30 @@
+[tool.towncrier]
+    # The name of your Python package
+    filename = "CHANGELOG.md"
+    directory = "changelog.d"
+    issue_format = "[\\#{issue}](https://github.com/matrix-org/matrix-appservice-bridge/issues/{issue})"
+
+    [[tool.towncrier.type]]
+        directory = "feature"
+        name = "Features"
+        showcontent = true
+
+    [[tool.towncrier.type]]
+        directory = "bugfix"
+        name = "Bugfixes"
+        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 = "misc"
+        name = "Internal Changes"
+        showcontent = true

scripts/changelog-check.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+pip3 install towncrier==19.2.0
+python3 -m towncrier.check --compare-with=origin/develop

scripts/changelog-release.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+VERSION=`python3 -c "import json; f = open('./package.json', 'r'); v = json.loads(f.read())['version']; f.close(); print(v)"`
+towncrier --version $VERSION $1