bencode v0.1.1

Changes:

• Fix invalid output of events::debug_to for lists and dicts.
• Replace macro BENCODE_SERIALIZES_TO_DICT by BENCODE_SERIALIZES_TO_DICT_SORTED
  and BENCODE SERIALIZED_TO_DICT_UNSORTED. serializes_to_dict
  now takes an enum non-type template argument dict_key_order
  to indicate if the dict default iteration order is sorted or not.
• Fix various event producing compilation errors.