Trifinger-simulation

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- Switch from setup.py to setup.cfg
- Set dtypes of gym spaces to np.float64

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- Nicer rendering of the boundary (68)
- Change initial pose of camera in PyBullet GUI (68)
- Set proper initial position based on finger type (79)
- Fix incompatibility with newer Gym versions (81)
- Add option to save images to `demo_cameras` (82)
- Simulate delay of camera observations (84)
- Optionally compute tip velocities in forward kinematics (85)
- Cleanup the code and add more unit tests

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There is no changelog for this or earlier versions.