Log Message:
Update ruby-yard to 0.9.5.

# 0.9.5 - July 22nd, 2016

- `yard doc` will now generate `.yardoc/processing` and `.yardoc/complete` files
  to allow other tools to properly detect when YARD is in the middle of parsing
  source files, and when it has completed writing the database.
- Added support for on-demand generation of LibraryVersion objects using the
  `:disk` source type. LibraryVersion objects pointing to a .yardoc database
  directory will now auto-generate if there is a `source_path` attached.
- Added warning for macros attached to non-method objects.
- Fixed a few more parsing errors.