Merge branch 'release/v0.0.3' into develop
Move errors file to proper location
Accept BitWallet::Address as an argument for BitWallet::Account#send_amount
Add BitWallet::Accounts#with_balance to fetch accounts with balance
Add BitWallet::Account#recent_transactions and
BitWallet::Wallet#recent_transactions
Use bitcoin_testnet for managing the testnet
bumps version
Merge branch 'release/v0.1.0'