[Documentation]: Mention getErrorCode in upgrading section

[levicki]

Feature description

The upgrading section here does not mention that BitException no longer has getErrorCode() and what it has been replaced with.

Additional context

No response

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[rikyoz]

Hi!
You are right, I forgot to add this change to the list.
Thanks for pointing this out, I will update the README as soon as possible!

[levicki]

@rikyoz No worries man, I upgraded my project from 3.1.1 to 4.0.8 without a hitch. I hope you are doing fine, thanks again for writing this library.

[rikyoz]

I upgraded my project from 3.1.1 to 4.0.8 without a hitch.

Glad to hear the upgrade went smoothly!

I hope you are doing fine, thanks again for writing this library.

Thank you for your kind words! I'm doing well, hope you are too.
Thanks for keeping using bit7z! 🙏