Base node v0.3.0 release

Tari base node v0.3.0 release
Tari Base Node v0.3.0 is
available for download
This release includes a breaking change to the local blockchain DB. A node upgrading to this version will need to delete its existing db and resync the blockchain.
You do not need to delete your wallet. Fake funds are SAFU.
To reset your database, follow these steps:
Locate your Tari data folder. The default locations are
%USERPROFILE%\.tari-testnet
Delete the
folders in their entirety. You can leave
Restart your node. Re-syncing takes an hour or more right now.
New Features in this release
Several of back-end changes (hence the need to reset the db) to accommodate pruned mode nodes.
Several new gRPC endpoints for use by the block explorer (and future wallets) (#1922)
Increase redundancy for Store and Forward messages (#1929). This PR increases the number of nodes
that will see and store a SAF message when it reaches the neighbourhood of the destination.
Have Messaging protocol substreams close after a period of inactivity (#1913)
Bug fixes
Fix mobile build by emitting
cargo:rerun-if-changed
directive automatically for protobuf (#1926)
Fix missing Source and Destination Pubkeys in FFI Transaction Cancellation callback return (#1933)