Storing and retrieving large amounts of data from IndexedDB. Warning - this will load ~180mb of JSON from ~70 files.

1. Click Fetch + write to IndexedDB to download 190mb of JSON and store it across 55 rows in IndexedDB
2. Click Load many from from IndexedDB. This will use IDBObjectStore.getAll() to load all rows from IndexedDB in one transaction
   • This crashes on Firefox
3. Click Load many from from IndexedDB using openCursor
4. Click Load all individually from IndexedDB to load all rows from IndexedDB serially using IDBObjectStore.getAllKeys() + IDBObjectStore.get()
   • On my computer Firefox takes ~9000ms, Chrome takes ~2000ms
5. Optionally, Load one large row from IndexedDB