E3D chimera dualextruder FLSUN Prusa i3 (2017) Remix

This is a remix of E3D cyclops and chimera dualextruder FLSUN Prusa i3 (2017) by pipa666 with changes for features I wanted in the model.

I modified the main carriage to contain a strain-relief loop and limit switch mount. I modified the Chimera mount to to remove the back section and added a SN04 mounting bracket to the right side as the sensor wouldn't fit at the back of the Chimera due to the orientation of the hot ends. I also bonded the "washer" model to the top of the Chimera mount mode