Merge pull request #60 from iain/master

Also capture Sinatra's errors
add sensible defaults to the timeout setting
Merge pull request #62 from mattkanwisher/master

Sensible defaults for timeouts
Remove frames which are missing filenames
0.4.1
Stupid helper
Don't require Raven.configure to be called
Remove signature and add secret key (protocol version 3)
Add support for Raven#context and some minor refactoring
Improve culprit detection

Use last frame that is marked as part of app, or last frame if no app frames are available.
0.4.2
Better context helpers