Beta version 5.1.0

We're excited to publish a new release. We've moved from LevelDB to Symas LightningDB which gives us the technical ability to perform ACID transaction on all database operations.

The result is: we get multithreaded correctness and database corruption security if case of computer restarts or crashes. Additionally, LightningDB will also give performance benefits through direct data store accesses.

All data and wallets in the RaiBlocksBeta directory from previous versions will be invalid and lost. If you're beta testing the client, please delete this directory so the new client can reinitialize.

Let us know if there are any issues with the new release!