FIX: Fix step-down-in-jumps procedure
FIX: Revert errant fix
STY: Clearer algorithm
ENH parc_from_labels():  Raise error for overlapping labels
API:  add `read_annot()`, deprecate `labels_from_parc()`
RF/API  `write_annot()` to replace `parc_from_labels()`
DOC:  reference and whats_new
update tests and examples
RF write_annot:  check parcellation before writing
FIX: Py2.6 compatibility (test_label)
ENH write_annot():  assign "unknown" label to unlabeled vertices
ENH write_annot:  add logger info for unlabeled vertices
DOC:  better error message
ENH colors:  make color assignment predictable
DOC:  deprecation messages
backport fake assert_is_not
Merge pull request #1142 from Eric89GXL/fix-step-down

FIX: Fix step-down-in-jumps procedure
FIX: Add step-down fix note
Merge pull request #1126 from christianmbrodbeck/parc-io

*.annot I/O
FIX: py3 compatibility