When handling exception log exception message rather generic message
updated message to include even more useful information

This was suggested by @kostiklv on github
Remove new live from default error_log formatter

error_log() function already insert a new line at end of the given
message, this commit just remove the new line at end to remove the new
live duplication.
Fix issue with changing the rotating file handler filename format, refs #267
Merge pull request #357 from henriquemoody/error_log

Remove new live from default error_log formatter
Remove unnecessary ErrorLogFormatter, refs #357
Merge pull request #353 from patforg/master

When handling exception log exception message rather generic message
Added $appendNewline flag to the JsonFormatter to enable using it when logging to files, fixes #344
Update changelog
Fix docblock, fixes #358
Lazy-initialize the buffer handler, fixes #359
CS fixes
Modified ChromePhpHandler and FirePhpHandler to send no headers if no User-Agent is set
if HTTP_X_FIREPHP_VERSION is set, it should not require the user agent
Merge remote-tracking branch 'hver/firePhpRefactor'
Optimize ChromePHP/FirePHP to skip header generation when they are disabled, refs #360
Fixed the default file permission for RotatingFile
Merge pull request #362 from stof/patch-2

Fixed the default file permission for RotatingFile
Update changelog
Add getters for handlers/processors, fixes #363