add some todos

    // TODO allow for other filenames besides README.md

- [ ] better separation of base features and default template
  - make sure that buildSteps can copy things into directories that weren't
    created as part of the site generation.
  - Maybe allow `copyTo` to have variable interpolation in it, for totally
    custom directory paths
- [ ] Make merged commits show up in the commits list and commit page.
  - These don't show up as anything right now