v3.0.0

This release includes significant updates to the underlying android and cocoa
libraries.

Enhancements

• Add support for Unity 5
• Add support for WebGL
• Add support for OS X
• Add support for setting user metadata
• Add support for setting app version
• Add support for setting breadcrumbs
• Upgrade bugsnag-android from 3.2.5 -> 3.4.0
• Upgrade bugsnag-cocoa from 4.0.7 -> 4.1.0

Bug Fixes

• Fix crash resulting from use of deprecated method
  Simon Maynard
  #13
• Update callback registration method to remove deprecations
  Delisa Mason
  #20