PySkycoin 0.25.1

Added

• Add skyapi, a wrapper for Skycoin node REST API at version 0.25.1
• Export functions in Skycoin 0.25.1 core API's
• skyapi client for Skycoin node REST API
• Support for building ARM 32 / 64 bits architectures.

Fixed

• Virtual envs now work for every Python version of interest

Removed

• Delete function SKY_base58_String2Hex