Redo command line parsing using Qt
Intercept paste events on the serial window

This also allows drag/dropping a file onto the window to have its
contents sent.
Hook up Retry button
Fixes to build on MSVC2013
Fix crash on close
Enable baud rate settings and progress bar display

Progress bar doesn't do anything yet though.
Fix the Linux build
Recheck Program button validity after serial port status change
Update readme
Pass command line args to GUI
Implement log saving
Add screenshot