Uncap `mdformat < 1.dev0` requirement

[kdeldycke]

Describe the bug

mdformat 1.0.0 has just been released.

Unfortunately I cannot install mdformat_pyproject because it is capping mdformat to < 0.8.0:

❯ uv pip install "mdformat == 1.0.0" "mdformat_pyproject == 0.0.2"
  × No solution found when resolving dependencies:
  ╰─▶ Because mdformat-pyproject==0.0.2 depends on mdformat>=0.7,<1.dev0 and you require mdformat==1.0.0, we can conclude that your requirements and mdformat-pyproject==0.0.2 are incompatible.
      And because you require mdformat-pyproject==0.0.2, we can conclude that your requirements are unsatisfiable.

[kdeldycke]

I proposed a fix of this issue in: #19

[csala]

Yes, we should do the change. But I rather prefer to make it ~=1.0.0 rather than uncapped >=1.0.0.

I'd be happy to take a PR that does this change plus maybe all the other version bumps (pre-commit, github actions, etc.), but I'd appreciate if we can keep it spearate from the internal code and formatting style changes.

[csala]

@kdeldycke @KyleKing and everyone, v0.1.0 has been released and tested successfully alongside mdformat==1.0.0