Allow a default to have no prefix, which means it can be used as a setting but will not be passed in the args.
Allow a default to have no prefix, which means it can be used as a setting but will not be passed in the args.

Useful when linters need args in non-standard formats.

ikappas/SublimeLinter3,paulirish/SublimeLinter3,zenlambda/SublimeLinter3,jasonrhaas/SublimeLinter3,smanolloff/SublimeLinter3,paulirish/SublimeLinter3,simonzack/SublimeLinter3,SublimeLinter/SublimeLinter3,SublimeLinter/SublimeLinter3,zenlambda/SublimeLinter3,jasonrhaas/SublimeLinter3,smanolloff/SublimeLinter3,ikappas/SublimeLinter3,simonzack/SublimeLinter3,Raynos/SublimeLinter3-raynos