require 'bugsnag' in rake.rb

Requiring 'bugsnag/rake' in a Rakefile will fail with unknown constant Bugsnag if 'bugsnag' hasn't already been required (e.g. by bundler). Adding this require in rake.rb ensures that developers only need to require 'bugsnag/rake' as per the documentation.
Fix parameter filtering in Rails 2.
Allow Pathname as config.project_root

there is no Pathname#empty?, so convert it to string before checking
Add code to payload
Get correct context
Account for where the linenumber is
Wrap file reading in a begin/rescue
Code should work
Documentation
Fix 1.8
Try this
Fix ruby 1.8
Correction
Fix deleting the correct lines
Merge branch 'patch-1' of github.com:danielfone/bugsnag-ruby
Read from Rails.env and Rails.root [Closes #169]
Merge branch 'rails2-parameter-filtering-simplified' of github.com:Umofomia/bugsnag-ruby
Merge branch 'patch-1' of github.com:mikz/bugsnag-ruby
use local config
Merge branch 'master' into add-code-to-metadata

Conflicts:
	spec/notification_spec.rb