References: [spec](https://specs.webrecorder.net/wacz/latest/), [py-wacz](https://github.com/webrecorder/py-wacz) * WaczWriter * [x] build `datapackage.json` * [x] build `datapackage-digest.json` * [x] build `indexes/index.cdx.gz` (CDXJ format) * [ ] build `pages/pages.jsonl` * WaczReader * [ ] list WARCs * [ ] list pages * [ ] lookup index * [ ] remote zip via range requests * WaczTool * [ ] user supplied `pages.jsonl` (should disable building it)
