Release of v0.26.0

[0.26.0] - 2019/07/20

Added

• Feature compatible with Skycoin v0.26.0
• .NET specific SWIG typemaps
• Support for api, cipher, cli, coin, params, util, wallet, wallet_option
• Test suite working on mono, dotnetcore netcoreapp2.1
• Scripts to generate development Docker image including .NET CLI tools
• Development setup instructions in README.md
• Release process documented in README.md
• Add make build target to build solution based on SWIG-generated PInvoke wrappers
• Add make help
• Add SkyApi,Skycoin wrapper for Skycoin node REST API version 0.26.0

Changed

• Update Skyapi wrapper for Skycoin node REST API version 0.26.0
• Submodule change skycoin/skycoin => skycoin/libskycoin@develop