v1.1.0

• Add in stacktrace-js for source maps in stack traces and hide Opal/Opal-RSpec/Karma code from test failure traces
• Examples filtered out using filter_run_including now show up as skipped in Karma results
• Remove undocumented source map results feature
• Improve error handling for cases where Sprockets can't find an asset or the Rack server dies before starting up