Remove 1.8.7 from Travis build spec
Require Ruby version >= 1.9.2 in gemspec
Remove weird 1.8.7 workarounds in features env
Don't check for >= 1.9 in Rakefile
Remove Ruby <1.9 core extensions
Remove checks for Ruby 1.8.x
Add tests in all the time that was omitted for Ruby 1.8.x
Remove File.read_with_options patch to allow 1.9 and 1.8 to behave the same
Update history to reflect merge of #1780
Update shoulda to 3.5.0

This release is compatible with Rubinius, 3.3.2 just seems to crash.

Also use an older version of shoulda-matchers that works with MRI <=
1.9.2
Disable coverage for Rubinius

It's too slow for now: https://github.com/rubinius/rubinius/issues/2730

Conflicts:
	Rakefile
	features/support/env.rb
	test/helper.rb
Add rubysl and rubysl-test-unit gems to Rubinius
Add Rubinius 2.2.1 and 2.1.1 to the Travis build matrix

Conflicts:
	.travis.yml