Fix yq --version

- xq: support --xml-short-empty-elements to emit self-closing element…

…s instead of the long form

- Implement YAML comment roundtripping

- Implement TOML comment roundtripping (tomlq -T)

- Add --width=0 for no-wrap option; --null-input as -n alias
- Force quote strings that can be parsed as integers in YAML 1.2
- Implement YAML 1.2 octals
- Prevent exception thrown when sys.stdin is None. (#193)

Finish migration to setuptools_scm

Constrain setuptools_scm version

- Add module entry points for xq and tomlq

- yq -y: Induce quoting of string scalars that start with 08 and 09

Revert "Do not interpret characters that cannot be parsed in octal as…

… int (#176)"

- tomlq: Use tomllib on Python 3.11 when not round-tripping

- xq: Support in-place XML editing

- Do not interpret characters that cannot be parsed in octal as int (#176)