AmendHub

- instead of trying to filter data as it comes in from the network,

filter it later when we write the spool file to the serial port

- rewrite the filter to handle sequences split across data buffers

- don't rewind file position or attempt retries if we can't write

- make separate ConfigureSpooler and StartSpooler functions

- server startup only needs to invoke UI if not configured to auto-run

- move more control drawing to the dialog filter's update handler

- add Settings and Print Status menu items

- add the auto-run option

- add "skip reverse feeds" option (not functional yet)

- rename IW1 mode to "compatibility" since it's not really a mode