- [ ] cmd: `submit` - submit a stack of bookmarks to gh
  - [x] create stack of bookmarks to display
  - [ ] submit
    - [x] dry-run
    - [x] take a snapshot of the repo before doing any changes
    - [x] create graph of bookmarks from `Log`
    - [ ] push bookmark
    - [ ] take a snapshot of the repo after changes
    - [ ] gh: create pr
      - [ ] gh: set title to bookmark name
      - [ ] gh: set base
    - [ ] show resulting stack, with clickable links (if supported, of not, just print the URLs)
    - [ ] gh: create stack comment with metadata in html comment
  - [ ] `submit` should sync with remote
    - [ ] check which bookmarks have a merged remote, abandon and rebase as necessary
    - [ ] gh: update base
    - [ ] gh: update stack comment
- [ ] options
  - [x] custom base
  - [ ] custom remote
- [ ] optimizations
  - [ ] parallelize work across PR's (async?)
- [ ] cmd: `jjespr st/status` - see status of all current stacks