Added a new Range creation protocol #andAbove, #andBelow, #andAboveBy:, #andBelowBy: for the easy creation of ranges with infinite bounds on one side.
Added a new Range creation protocol #andAbove, #andBelow, #andAboveBy:, #andBelowBy: for the easy creation of ranges with infinite bounds on one side.

briantrice/slate-language,krfkeith/slate-language,briantrice/slate-language,krfkeith/slate-language,krfkeith/slate-language,briantrice/slate-language,briantrice/slate-language,krfkeith/slate-language,briantrice/slate-language,briantrice/slate-language,krfkeith/slate-language,krfkeith/slate-language