### Version 2.1.0 (code 210) changelog
    - The main usage structure has been changed.
    - A more organized and functional code was provided. For example, separate values were not used for the same type of control all the time. Everything was done with a single function.
    - Smoother error processing was performed.
    - There were a lot of arguments, it was cleared up. So the usage change I mentioned above has occurred.
    - The exit codes were organized according to the sysexits library.
    - Better deb builder script.
    - In short, a lot of missing and errors that happened in 2.0.0 have been fixed
    
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