fix: Added Period(.) Key

[priyankaforu]

Contributor checklist

• This pull request is on a separate branch and not the main branch

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Description

There is a "." key missing in lib.rs. So I thought of adding it as I found it available in rdev

@henrikth93 and @andrewtavis , Please feel free to review it ! Thank you !!

[github-actions]

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[github-actions]

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• The CHANGELOG has been updated with a description of the changes for the upcoming release and the corresponding issue (if necessary)

[github-actions]

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[andrewtavis]

Is there a way to switch the assignments here to be somehow dynamic? I worry about our ability to maintain this part of the code if we need to add in every key possible for every script 🤔 I think it's fine to merge this, but then actually leveraging a dependency that allows us to not need to maintain a list of characters would be great.

Maybe the key assignment would be more assigning to a dictionary such that we'd be assigning it to a key rather than a direct variable, and the key could then be dynamically assigned based on keys from allowed characters? Just wondering :)

[andrewtavis]

Thanks so much for the contribution here, @priyankaforu! Looking forward to working on this with you further :)