Transform/DDG: replace multiple newlines with a single newline in code blocks
Transform/DDG: produce sorted output.txt
Transform/DDG: do not prepend 'c++' in the titles of entries
Transform/DDG: trim the description at the first dot, not the last
Transform/DDG: several fixes in the handling of the description

 * remove text in parentheses
 * properly ignore the size of the markup tags in the calculation of the limit
 * make sure we don't cut the description at a markup tag
 * make sure we don't cur the description at the middle of a word
Transform/DDG: make sure the description never contains any newlines
Transform/DDG: increase the description length limit to 200 characters
Transform/DDG: preserve short parenthesized text within description