Major changes:

• Fixed bug in not showing full last recorder step
• Don't call attr on backend (error from colab)
• Fixes traces in recorder
• Added recorder.watch(width)
• Fixed issues with recorder and food
• Added bulb.flip(), bulb.on()/off()
• Added world.get_food()

Major changes:

• Added bulb on/off and eat food to events
• Updated docs
• Added color_sensitivity to LightSensor
• Reset target and velocities to zero when set_pose
• Fix get smell typo

Major changes:

• Draw lights in world view as polygons
• Fixed two bugs: drawing of lasers; device ring distance from center

Major changes:

• Camera food and bulb fixes (bug when min/max wrapped around unit circle)
• Camera food and bulbs no alpha
• Camera food is rectangle; bulb is circle
• Add a ground image automatically with robot.pen_down() if there is None
• Renamed Robot.info() and World.info() to .summary()
• Light sensors are yellow; food sensors are white
• Raise exception for invalid device config
• Draw single wall lines with thickness
• Get walls from config correctly
• Fixed single wall config save
• Fixed WHITE changing

Major changes:

• Only recompute spread of food smell when food or walls change
• Automatically compute smell_cell_size based on world size
• Added robot.eat() - returns True if successful; must be close enough to food (20 pixels, robot.eat_food_distance), increases robot.food_eaten

Major changes:

• fixed bug in cast_ray in light sensor

Majors changes:

* default for blub brightness is now 50
* change bulb state will update the world
* food is visible in camera and in world view (food is white)
* added new World(smell_cell_size) size of smell grid, in pixels (larger is more coarse)
* improved World.info()

Major changes:

• fixed world.debug
• fixed bulbs on robots

Major changes:

• changed equation for light; multiple by about 30 for previous effect

Major changes:

• Added SmellSensor()
• Use smellsensor.get_reading() to detect food gradient
• Added World.add_food(x, y, standard_deviation)

Major changes:

• Don't draw bulbs if they are off
• Bulbs draw themselves on robot or world

Major changes:

• Added Bulb device for robots
• Added bulb.on() and bulb.off() for all bulbs
• See bulbs in camera view (under development to make look better)
• Robot's LightSensor device can sense bulbs on robots

Major changes:

• Bulbs now have names
• Added world.bulbs, world.get_bulb(name or index)
• Added robot.add_device_ring()
• Removed bqplot from setup
• Added world.add_wall(color, x1, y1, x2, y2, box=False)
• Added Vehicle robot type

Major changes:

• Add light with transparency to camera image (in progress)
• Fixed bug in seeing obstacles in camera
• Made robots height bigger in camera image

Major changes:

• Draft of seeing light in camera view
• Give warning if not enough robot control functions
• LightSensors show as white
• removed robot.turn()
• 0 to 1 only values: robot.forward(), robot.backward()
• Renamed world.step to _step
• Changed robot.move() to require two values
• Added robot.motors(l, r)
• Renamed camera.a to camera.fov
• Removed the display from recorder.save_as()
• Renamed LightSensor.get_reading() to get_brightness()

This version will need an updated aitk.utils so Joystick will match Robot.move

Major changes:

• fixed recorder bug

Major changes:

• fixed hidden property reference in recorder watcher
• added robot.get_time()

Major changes:

• Move clock below world view
• Added first documentation Notebooks

Major changes:

• Fixes for pen and speak at time 0
• Allow int width and height on World.watch()
• Changed robot repr

Major changes:

• Enabled circle-ci integration testing
• Devices only accept valid config keys now
• Bulb drawing enhancements

Major changes:

• made many attributes "private" (renamed with leading underscore)
• removed camera viewport; set defaults
• don't allow extra keywords for world and robot
• updated worlds with direction -> a

Major changes:

• Added Robot.get_velocity(target=False)
• Don't color entire robot when stalled; now just border is white
• Robot.reverse() flips all velocities (vx, va)
• Added Robot.rotate() and Robot.translate(); same as Robot.turn() and Robot.forward()
• Renamed all take_picture() to get_image(), returning a PIL Image
• Renamed all direct to a (in robot and devices)
• You can draw on world with world.canvas.draw_line(), draw_circle(), etc.
• Camera images are less curved than before

Major changes:

• Fixed issues with robot direction
• Adjusted RangeSensors to properly convert direction to world coords

Major changes:

• Fixed Robot direction coords in constructor and JSON in/out
• Added Camera.orthographic (distance is to camera plane) vs. perspective mode (distance is to camera point)

Major changes:

• requires aitk.utils
• Adjust Playback buttons
• Always inject CSS; clean up watchers
• CameraWatcher takes layout kwargs; move(t, r, quiet)
• Added world.run(background=True)
• world.stop()
• world.status
• display(format)
• get_widget()

Major changes:

• Use World.add_bulb("yellow", ...) rather than World.add_bulb(Bulb("yellow", ...))

Major changes:

• Allow robot.move(T, R) to ignore None values (to control one or the other)
• Changed World.add_bulb() to take args, not Bulb object

Major changes:

• Changed camera angle from 60 to 30
• Changed colorsFadeWithDistance 0.5 to 0.9
• Changed cameraShape from [256, 128] to [64, 32]
• Changed robot.get_pose(), set_pose() and repr to be counter-clockwise positive
• Renamed world.take_picture() to world.display()

Major changes:

• fixed two issues in world.reset()

Major changes:

• camera views are now pixelated rather than blurred
• camera.watch() is now a singleton