Fix missing import. This was causing an error: Symbol's function definition is void: org-ql-search-directories-files.
Fix helm backend not showing results
Because org-z--format-org-ql-heading returned a cons cell, org-ql-select tried to
flatten it and failed silently due to ignore-errors. Return text with a point-marker
property instead.
Fix another missing import
Add clean configs for testing backends. These can be used with e.g. emacs -Q -l test/helm/init.el in the project root.
Symbol's function definition is void: org-ql-search-directories-files.emacs -Q -l test/helm/init.elin the project root.Closes https://github.com/landakram/org-z/issues/5