v4.4.1

• bump bitbox-sdk dep
• bump axios dep
• throw errors instead of returning them, this fixes #27
• fix broken test case
• update package-lock.json
• remove unnecessary debug console.log
• remove wormhole reference
• check for SLPADDR in sendToken example
• update slpjs so that create-token example works
• fix multiple errors in create-nft
• port burn-all to burn
• switch examples to use mainnet
• update contributors
• bump version
• add link to explorers