* feat: return underlying d2n instance if pkgs was passed to init, document init pkgs
* feat: implement makeOutputs
* tests: dont fail if resolveImpure fails
* feat: make init return a dream2nix instance, rework makeFlakeOutputs code
* feat: default to source if config.projectRoot is not specified, update examples and readme
* fix: update the simple template
* docs: clarify init in readme
* docs: change readme numbering to back to 1
* refactor: dont default projectRoot to source
* docs: make extensive example use makeFlakeOutputs, link per-pkgs d2n example in readme
* fix: call loadConfig correctly
