Log Message:
devel/difftastic: update to 0.47.0

0.47 (released 16th May 2023)
Language Detection
 - Fixed an issue where file extensions of the form *.foo.bar (e.g. *.cmake.in)
   were ignored.
 - Added an option --override which overrides language detection based, on a
   glob, e.g. --override='*.js:javascript jsx'. See --help` for full
   documentation and more examples.
 - Removed the --language option. This option was confusing (it took a file
   extension rather than a language name) and not very useful (it overrode
   language detection for all files together).

Parsing
 - Added support for Solidity.

Display
 - When difftastic is invoked with two file paths, it will now truncate the
   path shown to the shared common parts. This is particularly helpful when
   using difftastic with mercurial.