* rct: update packages (RE, RG, RP, RS, RU) with new version 1.90
* radical: added `url_for_version` for older versions
* radical: set latest versions for `radical.pilot` and `radical.utils`
* radical: fixed `url_for_version` setup
* radical: set the latest version for `radical.entk`
* radical: fixed style for `url_for_version`
* Apply suggestions from code review (python version dependency)
Co-authored-by: Wouter Deconinck <wdconinc@gmail.com>
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Co-authored-by: Wouter Deconinck <wdconinc@gmail.com>
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