Taurenmd

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* Upgraded CI to Github Actions according to: https://github.com/joaomcteixeira/python-project-skeleton
* Updated README badges

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* Updates documentation with JOSS citation (PR 49)

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* Improves CONTRIBUTION.rst guidelines (PR 46)

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* Client progression is now represented by a progress bar (PR 44)

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* Improves log in `.taurenmd.cmd` (PR 43)

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* Adds `-i` to every `CLI` interface (PR 42)
* `major` version change because `cli_imagemol` lost backwards compatibility