Improved the Raven handler when using a Buffer handler
Amended PR #203 (RavenHandler batch improvements)
Filtered records based on their level
Took the record with the highest severity as the main one
Merge pull request #1 from pvanliefland/raven-improvements

Amended PR #203 (RavenHandler batch improvements)
Allow multiple users for PushoverHandler

The construct accepts a string or an array of user ids to keep backward compatibility.

In case of an array, a message is built and send for each of the users.
Merge remote-tracking branch 'fabpot/raven-improvements'
Fix issue in handleBatch when all records are below the minimum level, refs #203
Rename logFormatter to batchFormatter, refs #203
Add error handler, fixes #199
Fix feedback
Add tests and fix issue with array_merge
Make the ErrorLogger work with any logger interface object
Merge remote-tracking branch 'odino/master'
CS fixes and set the default NewRelicHandler level to ERROR, refs #105
Fix tests
Merge remote-tracking branch 'EmmanuelVella/patch-2'
Store user in a temporary property instead of hacking it into the record
CS fixes
Update changelog/readme
Use array_replace instead of manually looping through items
Refactored ErrorLogHandler to use constantes for types

- Create tests for ErrorLogHandler;
- Remove types 1, 2 and 3 in favor of specific handlers.