* initial kcu116 support
* add kintex ultrascale plus family to xilinx.cpp
* add docs
* combine xcku and xcvu check
* rebuild bitstream for -1 speedgrade
- _raw_data is now filled in configBitstreamParser
- source may be a file or a pipe
- displayHeader become a common method (configBitstreamParser)
- improve/rewrite some parser (efinixHexparser 1s -> 11ms)