Decode decodes bechString(Bech32) returns hrp(human-readable part) and data(32bit data array) / or error.

Encode encodes hrp(human-readable part) and data(32bit data array), returns Bech32 / or error if hrp is uppercase, return uppercase Bech32.

SegwitAddrDecode decodes hrp(human-readable part) Segwit Address(string), returns version(int) and data(bytes array) / or error.

SegwitAddrEncode encodes hrp(human-readable part) , version(int) and data(bytes array), returns Segwit Address / or error.