- When using absolute extrusion the gcode position e-axis position is now captured on PAUSE and restored in RESUME with a call to the G92 handler.
- Add a get_status() function that returns a dictionary with an 'is_paused' key.
- Do not allow consective calls to PAUSE or RESUME to exectue. Also do not allow a RESUME to executed without a previous PAUSE.
Signed-off-by: Eric Callahan <arksine.code@gmail.com>