* improvement: add Igniter installer task
* check uniqueness when adding to list
* fix dialyzer warnings
* add better checks when adding to AshPostgres
* change append_ to prepend_new_to_list
* add info/2 and use find_and_update_or_create
* use new find_module utilities
* fix add_to_ash_postgres
* prefix unused variable
* use add_dep instead of add_dependency