Merge branch 'release-v0.5.1' into 124-exceptions
Added new config for error tracking
Removed config for error tracking, not needed
Added exceptional library to autoload in main app
Add Plain_Exceptions to override CI_Exceptions for some methods
Added new exceptional library to be used if user defines CUSTOMPATH/libraries/Error_Tracking.php file
Removed needs for configs
Added new constants for error tracking
Updated plain exceptions as well as exceptional library to use them
Update core model to turn exception handling back on
Added exception tracking to cron job and import JSON
Added exception handling to emails sent to capture headers on error
Added exception handling to emails sent to capture headers on error
Updated to $this->CI
Added exceptional call to session library on possible hijack attempt
Merge branch '124-exceptions' into release-v0.5.1