v0.9.0: Bump version to 0.9.0.
- Had to skip past 0.7.0 and 0.8.0 due to unpublished versions on npm
- Scan now works for more than one page with indexes (rocicorp/repc#231)
- Remove noisy console.debug() statements that were logging every RPC (they were messing up our perf tests)
- Rename ScanId -> ScanKey and id to key. Deprecate old names but allow them to be used still
- This is the first release that is BSL