clean up print monitoring

add some notes

Fix bug caused prints to fail, improve print monitoring

bump version number

Cleanup serial handling

No more sleep(), just block on serial port read with 50 ms timeout
Clean up handling of readline and error
Reduce most timeouts to 500 ms down from 10 seconds, should make things more responsive when an error occurs

Big cleanup to handling of status, fix issue with zoffset

Clean up UI

- Add locks to protect xzyv3 class from becoming reentrant.  Probably should rewire it to be message based.
- Replace tree controll with list for status box.  Now status can update without flickering
- Drive progress bar when printing, should drive it when converting large files as well.
- Properly get zOffset from status

Clean up UI

- Add locks to protect xzyv3 class from becoming reentrant.  Probably should rewire it to be message based.
- Replace tree controll with list for status box.  Now status can update without flickering
- Drive progress bar when printing, should drive it when converting large files as well.
- Properly get zOffset from status

missing files