• * Add a dedicated version option to CLI11 to facilitate use of version flags, similar to help flags
    
    * add some test for the version flag
    
    * update errors and formatting
    
    * clear up gcc 4.8 warnings
    
    * add a few more tests
    
    * fix compiler error
    
    * fix a few comments, and change default version flag to only use "--version"
    
    * remove `version` calls and tests
    
    * formatting and add `std::string version()`  back in.
    Philip Top authored
     
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