* Migrated to async/await.
* Update Entries and highlight with meta about leaked password.
* Zeroizing sensitive data after usage.
* Increased dropbox setup timeout to 10 minutes.
* Ability to clean all the synchronization configurations.
* Using j4rs_derive.
* Updated Rust dependencies.

Bugfixes:

* Handle very high salt positions.
* Correctly handling dropbox configurations on save.