Released version 3.0.0

• Added a new block explorer (the only API that supports Bech32 address format) called Blockonomics.
• The wallet now supports Bech32 SegWit address format, uses Blockonomics api for their balances explicitly.
• Wallet also has verification capabilities for Bech32 format.
• Also moved verification classes (Base58 and Bech32) to a new assembly and added some unit tests.