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
Use http_adapter configuration for setting Faraday adapter
Merge pull request #63 from iain/expose-faraday-adapter

Use http_adapter configuration for setting Faraday adapter
Correct protocol version (3, not 3.0)
0.4.3
Some basic docstrings for context
Add project_root to configuration
Pull options outside of the Faraday builder
Whitespace
Install processors
I'm told for loops aren't ruby-like
Merge pull request #70 from getsentry/fix-processors

Install processors
0.4.4
Remove unused VERSION declaration
Allow Raven to initialize with an server_name variable
Use @configuration in place of Raven.configuration
Merge pull request #73 from k-yamada/master

Allow Raven to initialize with an server_name variable
Fail gracefully when a transport is unable to send data