Add support to Wolfram file formats

[lumeng]

I'd like to add support to the file types used in Wolfram Language/Mathematica:

• Wolfram notebook files (*.nb):

  • http://www.wolfram.com/technologies/nb/

• Wolfram CDF files (*.cdf):

  • http://www.wolfram.com/cdf/index.html

• Wolfram Language/Mathematica package files (.m, .wl):

  • https://reference.wolfram.com/language/tutorial/WolframLanguagePackages.html
  • http://reference.wolfram.com/language/tutorial/WolframLanguageScripts.html

• Wolfram Language/Mathematica test files (.mt, .wlt):

  • https://reference.wolfram.com/language/tutorial/UsingTheTestingFramework.html

I've opened a pull request: https://github.com/petdance/ack2/pull/618/files

[petdance]

I'm wary of adding this because I don't know how widespread use of the Wolfram file formats are.

Have you been using these in your .ackrc? How long?