Todo
Implement POST /markdown as Github.render_markdown
Implement search (#230)

But:
 - no helper to build query
 - added ad hoc attributes to returned classes
 - ignored score
 - duplicated a large part of PaginatedList in SearchResult
Repository.get_languages
Repository.create_merge
Fix (add special case to) code generator
Repository.compare
Allow Commit.sha as param for Repository.create_merge
Document APIs that I don't plan to implement in PyGithub
Todo
Document the number of end points implemented or not
Tidy unimplemented.*.yml
Fix test
Implement hooks
Cover Repository
Cover Hook
Mark POST /hub as not planned
Implement hooks
Repository.get_stats_commit_activity
Repository.get_stats_contributors