class Covered::MarkdownSummary

@returns [Covered::Statistics] Statistics for all coverage objects, including omitted ones.
@parameter coverage [Covered::Coverage] The coverage object below the threshold.
@yields {|coverage| ...} Coverage whose ratio is below the configured threshold.
@parameter wrapper [Covered::Base] The coverage wrapper to enumerate.
Enumerate coverage below the threshold and return aggregate statistics.

def each(wrapper)
	statistics = Statistics.new
	
	wrapper.each do |coverage|
		statistics << coverage
		
		if @threshold.nil? or coverage.ratio < @threshold
			yield coverage
		end
	end
	
	return statistics
end