Fix/enable pendulum demo #4
Description
The pendulum demo is not included in the main (tabbed) demo; it can still be invoked manually (e.g. run the "PendulumDemo" inside Eclipse). It's broken and it's not going anywhere.
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The pendulum demo is not included in the main (tabbed) demo; it can still be invoked manually (e.g. run the "PendulumDemo" inside Eclipse). It's broken and it's not going anywhere.