Log Message:
py-ruamel.yaml: updated to 0.15.94

0.15.94:
- fix missing line-break after end-of-file comments not ending in
  line-break

0.15.93:
- fix failure to parse empty implicit flow mapping key
- in YAML 1.1 plains scalars y, 'n', Y, and 'N' are now
  correctly recognised as booleans and such strings dumped quoted

0.15.92:
- fix failure to parse empty implicit block mapping key

0.15.91:
- allowing duplicate keys would not work for merge keys

0.15.90:
- fix issue with updating CommentedMap from list of tuples

0.15.89:
- fix for items with flow-mapping in block sequence output on single line
- fix for safe dumping erroring in creation of representereror when dumping \ 
namedtuple

0.15.88:
- fix inclusing of python code from the subpackage data

0.15.87:
- fix problem with empty lists and the code to reinsert merge keys

0.15.86:
- reinsert merge key in its old position
- fix for issue with non-ASCII anchor names
- fix for issue when parsing flow mapping value starting with colon (in pure \ 
Python only)

0.15.85:
- the types used by SafeConstructor for mappings and sequences can
  now by set by assigning to XXXConstructor.yaml_base_dict_type
  (and ..._list_type), preventing the need to copy two methods
  with 50+ lines that had var = {} hardcoded.

0.15.84:
- fix for CommentedMap.copy() not returning CommentedMap, let alone copying \ 
comments etc.

0.15.83:
- fix for bug in roundtripping aliases used as key

0.15.82:
- anchors and aliases on scalar int, float, string and bool are now preserved. \ 
Anchors
  do not need a referring alias for these
- anchors no longer lost on tagged objects when roundtripping

0.15.81:
 - fix issue saving methods of metaclass derived classes

0.15.80:
 - fix issue emitting BEL character when round-tripping invalid folded input

0.15.79:
- fix issue with anchors nested deeper than alias

0.15.78:
- fix setup issue for 3.8

0.15.77:
- setting yaml.sort_base_mapping_type_on_output = False, will prevent
  explicit sorting by keys in the base representer of mappings. Roundtrip
  already did not do this. Usage only makes real sense for Python 3.6+
- implement Python version check in YAML metadata in _test/test_z_data.py

0.15.76:
- fix issue with empty mapping and sequence loaded as flow-style

0.15.75:
- fix issue with single '?' scalar
- fix issue with duplicate merge keys

0.15.74:
- fix dropping of comment on rt before sequence item that is sequence item

0.15.73:
- fix irregular output on pre-comment in sequence within sequence
- allow non-compact (i.e. next line) dumping sequence/mapping within sequence.