v0.6.0

A quality of life release. Lots of small fixes and tweaks around the usage.

• docs: better formatter-spec structure, lots of fixes everywhere
• docs: use mkdocs-numtide (#227)
• feat: clap integration (#214)
• feat: improve the formatter load error (#211)
• feat: more concise stats (#190)
• feat: replace custom log with env_logger (#199)
• feat: update rust to 1.65.0 (#193)
• fix: Don't ignore --config-file when using --stdin (#231)
• fix: change default log level to info (#212)
• fix: default log level should be 'Warn' not 'Off' (#207)
• fix: log formatter error as warn instead of info (#207)
• fix: minor typos (#248)
• fix: stop symlinked tree root being deref'd (#252)
• fix: treefmt --stdin when changes are moved into tempfile (#225)
• flake: expose the list of supported systems (#228)
• flake: make treefmt the default package
• flake: move treefmt.withConfig to a separate repo (#204)
• repo: switch default branch to main