Guess what was not removed?

    1 : 1,0
    2: 01
    3: 1.0
    4: 1O
    5: 0b1
    6: 0x1
    7: 0i1
    8: hey,
    8.0: oh,
    version: [3.1, "3.1", 3.10, "3.10"]

Gives you:

    {
    "1": "1,0", 
    "2": 1, 
    "3": 1.0, 
    "4": "1O", 
    "5": 1, 
    "6": 1, 
    "7": "0i1", 
    "8": "oh,", 
    "version": [
        3.1, 
        "3.1", 
        3.1, 
        "3.10"
    ]
    }

YAML turns raw literals into strings, except when the string matches a certain format. Then it may turn it into other things, like int or float, and you better know all the rules by heart and be attentive. And not introduce any typo, which of course no human ever does.

So YAML is fine with breaking compatibility in minor version bumps?