* Add workflow to build container image

* Create 826.misc

* Support pushing latest

* Use develop

Co-authored-by: Christian Paul <christianp@matrix.org>

* Update yarn.lock
* Dockerfile: Install python3 and add git:// workaround for github.com
* CI: Apply git config to fix fetching from Github
* Upgrade matrix-appservice-bridge to v5.0.0; requires Node.js 16+

* Add signoff workflow

* Add bridges

* changelog

* Drop support for Node 12
Enable support for Node 18

* Don't be too hasty

* changelog

* Add towncrier

Signed-off-by: Andrew Ferrazzutti <andrewf@element.io>

* .gitkeep -> git.keep

Signed-off-by: Andrew Ferrazzutti <andrewf@element.io>

* Remove unused changelog-check script

check-newsfragment script is used instead

Signed-off-by: Andrew Ferrazzutti <andrewf@element.io>

* Update check-newsfragment script

- Link to the correct PR guidelines
- Filter out git.keep

Signed-off-by: Andrew Ferrazzutti <andrewf@element.io>