Changes in version 0.0.3
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* If command-line variable is a list, enforce the order of names of elements to 
  be alphabetical (in testing file, tag=%i).
  
* `help` and `version` will not be exported.

Changes in version 0.0.2
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* add `collapse` option in `qq` so that `qq` can return a vector instead of
  only collapsing them into one string.


Changes in version 0.0.1
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* the first release
