Difftastic is a structural diff tool that understands syntax. See the manual to get started, and the changelog for historical changes.
Parsing
Improved CSS parsing and HTML sublanguage parsing.
Diffing
Added an --ignore-comments option.
Improved textual diffing performance, particularly when the two files have few lines in common.
Display
Fixed an issue with unwanted underlines with textual diffing when DFT_BYTE_LIMIT is reached.
Fixed a crash in inline display when the file ends with whitespace.
Build
Renamed the vendored parser directory to vendored_parsers/, as cargo vendor would clobber the vendor/ directory.