Implement Base58check prefixing
- Use SHA-256 helper in place of external SHA-256 implementation.
- Add optional prefixing to
Base58.encodeCheck
andBase58.decodeCheck
. - Add
PrefixError
andChecksumError
custom classes. - Remove all dependencies.
Base58.encodeCheck
and Base58.decodeCheck
.PrefixError
and ChecksumError
custom classes.