Improve release instructions

.bumpversion.cfg

@@ -15,6 +15,6 @@ replace = <!-- Add new releases here -->
 	<release version="{new_version}" date="{now:%Y-%m-%d}"/>
 
 [bumpversion:file:doc/changelog.asciidoc]
-search = (unreleased)
+search = (today)
 replace = ({now:%Y-%m-%d})
 

doc/changelog.asciidoc

@@ -51,7 +51,7 @@ Fixed
 - Remaining issues (mostly warnings) related to Python 3.8, especially for
   QtWebKit.
 
-v1.8.2 (unreleased)
+v1.8.2 (today)
 -------------------
 
 Changed

doc/contributing.asciidoc

@@ -709,7 +709,8 @@ qutebrowser release
 * Consider updating the completions for `content.headers.user_agent` in `configdata.yml`.
 * Make sure Python is up-to-date on build machines.
 * Mark the milestone at https://github.com/qutebrowser/qutebrowser/milestones as closed.
-* Update changelog
+* Update changelog, replace correct (unreleased) by (today).
+* If necessary: Update changelog in release branch from master.
 * Run `./.venv/bin/python3 scripts/dev/update_version.py {major,minor,patch}`.
 * Run the printed instructions accordingly.
 * Update `qutebrowser-git` PKGBUILD if dependencies/install changed.