Toy brainf**k interpreter; example app that can be modified without restarting

fix a second BSOD in #4 :/

I need more tests.

Created by  Kartik K. Agaram  on June 12, 2022
R22PA3XRU3SCGUN73F6C3PFCH5Z77KGSEFHXOY5B7MISVW5WCTXAC
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