2.0.0

• New platforms IEI Tank, Ultra-96, Rock960, Hikey960, Dragonboard 820c
• Added support for chardev GPIO devices with implementation on several boards
• Added string based I/O initialization for simpler integration with other frameworks
• Added GTest support for unit testing
• Extended named LED device APIs allowing them to be listed during board definition
• Removed packaging and CI for obsolete devkits
• Multiple bug fixes and cmake improvements