build(release): Add release scripts

.cz.toml

@@ -0,0 +1,9 @@
+[tool.commitizen]
+bump_message = "chore: Release $new_version"
+tag_format = "$version"
+version = "1.4.3"
+version_files = [
+    "README.md",
+    "pyproject.toml:version",
+    "src/REST/version.py:__version__"
+]

README.md

@@ -1,4 +1,4 @@
-# RESTinstance
+# RESTinstance (1.4.3)
 
 [Robot Framework](http://robotframework.org) library for RESTful JSON APIs
 

release.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+
+# RESTinstance (https://github.com/asyrjasalo/RESTinstance)
+# Robot Framework library for RESTful JSON APIs.
+#
+# Copyright(C) 2018- Anssi Syrjäsalo (http://a.syrjasalo.com)
+# Licensed under GNU Lesser General Public License v3 (LGPL-3.0).
+
+prerelease_type="$1"
+
+branch="$(git branch --show-current)"
+if [ "$branch" != "main" ] && [ "$branch" != "master" ]; then
+  echo "Error: Releases must be created from trunk, run $0 in main/master."
+  exit 1
+fi
+
+if [ -n "$(git status -s)" ]; then
+  echo "Error: Working tree has changes: Stash, commit or reset first"
+  exit 1
+fi
+
+if [ -n "$prerelease_type" ]; then
+  echo "Creating pre-release ($prerelease_type)"
+  pipx run --spec commitizen cz bump --prerelease "$prerelease_type"
+else
+  pipx run --spec commitizen cz bump
+fi