ดาวน์โหลด Difftastic 0.58.0

Difftastic is a structural diff tool that understands syntax. See the manual to get started, and
the changelog for historical changes.

### Parsing

Difftastic now preserves tree-sitter parse tree structure on parse error nodes. This reverts the
flattening behaviour introduced in 0.38. Preserving structure tends to produce better diffs,
although it increases the risk that difftastic will show fewer changes in the presence of parse
errors.

Since difftastic is now conservative with parse errors (DFT_PARSE_ERROR_LIMIT is 0 by default),
this seems like a better tradeoff.

Updated C, C++, CMake, CSS, Elm, Go, Lua and Python parsers.

### Diffing

`--strip-cr` now defaults to `on`, so comparing a file with CRLF endings with a file with unix
line endings will not show spurious changes.

### Documentation

Difftastic now has a man page, see the `difft.1` file.

### Performance

Fixed a memory leak and improved performance in some cases.

### Command Line Interface

Fixed a crash when difftastic could not detect the terminal width, such as inside eshell.

Difftastic now also considers $COLUMNS when detecting the terminal width.