documenting how to write or replace a chunk and it’s rendering machinery.
Fix inlines being copied to other modeladmins. Grrr Django etc.
restore correct positioning (last-child) when saving a new chunk via the admin.
avoid strip_tags if the renderer returned None,
as it ends up being a str + None concatenation issue.
fix remaining failing tests via `make test`
gee, shut up about things I’ll never care about.