Version 1.2.0

What's new:

• updated the way to search for libclang library file on different systems.
  Important: If you could use libclang method and it has broken - please
  report in on Github.
• now using view.buffer_id() instead of view.id() to detect if a buffer has
  completions ready.
• the plugin will not search for default cindex as it is incompatible with
  python 3