WIP
WIP
Change defsite to a function
Simplify site config
Move things around.
Add site-source-dir and site-template-dir
Add site-source-files
Remove some unused functions.
Update pathname utils
Create hidden-pathname-p
Change 'article to a CLOS class
TODO
Add examples
Rework alienpress.asd
Add missing file
File type handler
Add file-collect-metadata
Add copy-or-write-file
Defalut file operation is copy-file
Add example config