update templates
rework repository layout and loads of improvements

- use edition number instead of pub date in edition handle
- copy profile assets from article folders to spine on build
- add seed publishers letter
- introduce config file for edition
- don't use submodules to link in articles; update clone command
- auto-detect edition info from config file in build command
- use Asciidoctor extension to add headshot to bio
- add title for edition
- hide uri scheme by default in articles
- create team per edition
- seed repositories more thoroughly
- add clone method to Refined
- switch to safe_yaml
- update deps
- bug fixes