Add `const` keyword to getters

Farama-Foundation / Arcade-Learning-Environment

The Arcade Learning Environment (ALE) -- a platform for AI research.

GNU General Public License v2.0

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Closed AlessioZanga closed 2 years ago

AlessioZanga commented 2 years ago

As the title says, this patch add missing const correctness to getters of the ALEInterface class.

JesseFarebro commented 2 years ago

Hi @AlessioZanga, sorry for taking so long to get around to this PR. Thanks for the contribution! 🎉