Check for "Prusa" style embedded thumbnails by default for
all slicers. This is becoming a standard, as it is now available
in Cura, Ideamaker, and Simplify3D via plugins.
Signed-off-by: Eric Callahan <arksine.code@gmail.com>
Don't require that gcode files embed two thumbnails. When
a single large thumbnail is parsed use pillow to create a
small one.
Signed-off-by: Eric Callahan <arksine.code@gmail.com>
The varous forks of PrusaSlicer are processed identically
outside of their identifier, so there is no need to
implement new classes for each fork.
Signed-off-by: Eric Callahan <arksine.code@gmail.com>
