C API 0.99.11

Features

• Add parents to the individual table to enable recording of pedigrees
  (@ivan-krukov, @benjeffery, #852, #1125, #866, #1153, #1177, #1199).

• Added a tsk_table_collection_canonicalse method, that allows checking for equality between
  tables that are equivalent up to reordering (@petrelharp, @mufernando, #1108).

• Removed a previous requirement on tsk_table_collection_union, allowing for unioning of
  new information both above and below shared history (@petrelharp, @mufernando, #1108).

• Support migrations in tsk_table_collection_sort. (@jeromekelleher,
  #22, #117, #1131).

Breaking changes

• Method tsk_individual_table_add_row has an extra arguments parents and parents_length.

• Add an options argument to tsk_table_collection_subset (@petrelharp, #1108),
  to allow for retaining the order of populations.

• Mutation error codes have changed

Changes

• Allow mutations that have the same derived state as their parent mutation.
  (@benjeffery, #1180, #1233)

• File minor version change to support individual parents