Update release process notes

RELEASE.md

@@ -4,11 +4,11 @@
 
 Example `version number`
 
-- 1.8.dev0 # development version of 1.8 (release candidate 1)
-- 1.8rc1 # 1.8 release candidate 1
-- 1.8rc2.dev0 # development version of 1.8 release candidate 2
+- 1.8rc0.dev0 # development version of first 1.8 release candidate
+- 1.8rc0 # first 1.8 release candidate
+- 1.8rc1.dev0 # development version of second 1.8 release candidate
 - 1.8 # 1.8 release
-- 1.9.dev0 # development version of 1.9 (release candidate 1)
+- 1.9rc0.dev0 # development version of first 1.9 release candidate
 
 ## Process
 
@@ -18,18 +18,29 @@ Example `version number`
       export PREVIOUS=<previous version number>
       export ORG="scientific-python"
       export REPO="changelist"
+      export LOG="CHANGELOG.md"
+
+- Update main branch
+
+      git switch main
+      git pull origin main
+
+  where `origin` is the name of the `github.com:scientific-python/changelist`
+  repository
 
 - Autogenerate release notes
 
-      changelist ${ORG}/${REPO} v${PREVIOUS} main --version ${VERSION}
+      changelist ${ORG}/${REPO} v${PREVIOUS} main --version ${VERSION} --out ${VERSION}.md
 
 - Put the output of the above command at the top of `CHANGELOG.md`
 
+      cat ${VERSION}.md | cat - ${LOG} > temp && mv temp ${LOG}
+
 - Update `version` in `pyproject.toml`.
 
 - Commit changes:
 
-      git add pyproject.toml CHANGELOG.md
+      git add pyproject.toml ${LOG}
       git commit -m "Designate ${VERSION} release"
 
 - Tag the release in git:
@@ -43,8 +54,17 @@ Example `version number`
 
       git push --tags origin main
 
-  where `origin` is the name of the `github.com:scientific-python/changelist`
-  repository
+- Create release from tag
+
+      - go to https://github.com/scientific-python/changelist/releases/new?tag=v${VERSION}
+      - add v${VERSION} for the `Release title`
+      - paste contents (or upload) of ${VERSION}.md in the `Describe this release section`
+      - if pre-release check the box labelled `Set as a pre-release`
+
+- Update https://github.com/scientific-python/changelist/milestones:
+
+      - close old milestone
+      - ensure new milestone exists (perhaps setting due date)
 
 - Update `version` in `pyproject.toml`.