2017.07: Changelog:

- Support openSSL 1.1.x
- Improve documentation
- Force some MTD to use UBI
- Spawn external processes and monitors them
- SWUpdate has a Logo now !
- Improve bootloader abstraction
- Hawkbit : check for cancel before updating
- U-Boot env was not saved
- raw handler: offset property
- reorganize LUA interface
- parser: add support for embedded script
- reorganize examples and add some utilities (tools)
- cleanup and fixes !