Merge pull request #192 from armink/master

net: add freemodbus master and slave v1.6.0
freemodbus: fix eol

On Windows platform, please set `autocrlf = true` and on Linux, please
set `autocrlf = input`.
Merge pull request #194 from grissiom/eol-issue

freemodbus: fix eol
Merge remote-tracking branch 'upstream/master'