Adjust test-runner to cleanup databases with binary keys safely.
Adjust test-runner to cleanup databases with binary keys safely.

dfahlander/Dexie.js,jimmywarting/Dexie.js,jimmywarting/Dexie.js,chrahunt/Dexie.js,jimmywarting/Dexie.js,dfahlander/Dexie.js,dfahlander/Dexie.js,chrahunt/Dexie.js,chrahunt/Dexie.js,dfahlander/Dexie.js,jimmywarting/Dexie.js,chrahunt/Dexie.js