4.17.0

- Try to build higher version available tag
- xfce-do-release: A review of confirmation prompts
- helpers: Improve script portability
- Improve Xfce Developer Center (developer.xfce.org)
- xdt-features.m4: Always enable compilation warnings
- g_locale_to_utf8 is misspelled as g_local_to_utf8
- xfce-build: Always pick the latest stable release
- Create the m4/ if it does not exists
- Use autoreconf to bootstrap xfce4-dev-tools itself
- Use autoreconf to bootstrap autotools
- xfce-do-release: Check for `docker` installed
- Add dependencies to build thunarx-python CI
- Fix location of apidocs
- xfce-build: Fix conditional in gitlabci
- Export apidocs as GitLab artifacts
- Get rid of glib-gettextize usage and XGETTEXT_ARGS custom args
- Remove obsolete AM_GLIB_GNU_GETTEXT
- helpers: Fix command-line if git-config core.editor is unset
- Update obsolete m4 macros
- helpers: Add 'xfce-build describe' command