v0.4

• added version for NEMA17 stepper motors
• added mounting option for einhell x-change batteries
• reworked position for ultra sonic sensors

v0.3

added mounting holes for roller wheel Tente 2470PJO075P40
added pocket for screws of motor cover
added mounting holes for HighPowerMotorFeatherWing (https://github.com/generationmake/HighPowerMotorFeatherWing)
added mounting holes for BNO055 in the center (issue #1)
corrected mounting holes for ultrasonic sensors

v0.2

corrected errors from v0.1
made all holes slightly bigger
reworked internal structure
added more mounting positions for Arduino and Raspberry Pi
added motor cover

Initial release

This was the first version which went into printing and assembling