def find_issues_to_add(all_issues, tag_name)
      all_issues.select do |issue|
        if issue["milestone"].nil?
          false
        else
          # check, that this milestone in tag list:
          milestone_is_tag = @filtered_tags.find do |tag|
            tag["name"] == issue["milestone"]["title"]
          end

          if milestone_is_tag.nil?
            false
          else
            issue["milestone"]["title"] == tag_name
          end
        end
      end
    end
def find_issues_to_add(all_issues, tag_name)
      all_issues.select do |issue|
        if issue["milestone"].nil?
          false
        else
          # check, that this milestone in tag list:
          milestone_is_tag = @filtered_tags.find do |tag|
            tag["name"] == issue["milestone"]["title"]
          end

          if milestone_is_tag.nil?
            false
          else
            issue["milestone"]["title"] == tag_name
          end
        end
      end
    end
Add all issues, that should be in that tag, according milestone

 @param [Array] all_issues
 @param [String] tag_name
 @return [Array] issues with milestone #tag_name