Molecule not support compatible mode

[XuJiandong]

In rust, we have compatible flag like below:

    fn from_slice(slice: &'r [u8]) -> VerificationResult<Self> {
        Self::verify(slice, false).map(|_| Self::new_unchecked(slice))
    }
    fn from_compatible_slice(slice: &'r [u8]) -> VerificationResult<Self> {
        Self::verify(slice, true).map(|_| Self::new_unchecked(slice))
    }

By default, the ccc molecule sets compatible off.

[Hanssen0]

Solved by #209