Fixed 0 being displayed empty

[Zenithsiz]

If an expression has value 0, you will only see the base (e.g. "0x", or "0b" / "").
This fixed it by adding a '0' character, if the number was 0

[RedDocMD]

Nice catch! Thank you for the fix.
Could you please add a test for this? Just to make sure we don't break it again later.

[Zenithsiz]

I wrote some tests, and during noticed that binary numbers use Ob instead of 0b (uppercase 'o' instead of zero).

I changed this to 0b, as I think it's unintentional, but if it is, tell me and I'll remove the commit that does it and adjust the tests

[RedDocMD]

I wrote some tests

Nice tests!

I changed this to 0b, as I think it's unintentional

Yes, that's a mistake 😅. Nice catch!