Changes

• perf: much faster (2x to 5x depending on the workload)
  • detect and apply better algorithms before starting
  • mmap support
• feat: you can now pass a file path as argument to tuc
• feat: add the ability to display fallback output when a field is out of bound (you can set it per-field using -f <range>=somefallback or by providing a default fallback with --fallback-oob somefallback) (it will be opened with mmap if available and as long as --no-mmap is not set)
• feat: it is now possible to type \t while formatting fields and output a TAB (as we already do for \n) e.g. -f '{1}\t{2}'
• feat: new argument --fixed-memory (-M) to cut lines in chunks of a fixed size (in kilobytes), to allow cutting arbitrary long lines
• feat: --characters now depends on the (default) regex feature
• feat: ignore broken pipe when feeding output to tools such as head
• feat: display short help when run without arguments
• feat: help and short help are colored, as long as output is a tty and unless env var TERM=dumb or NO_COLOR (any value) is set
• chore: --json internally uses serde_json, faster and more precise
• chore: improved test coverage