Logwatcher

This release fixed a bug with not distinguishing real errors when the last read position of the log file was in the beginning.

The message delivery method can be customized now by specifying an alternative to the PHP mail function. The example script was updated to demonstrate how to customize the message delivery method to use the urgent mail function that delivers messages directly to the recipient SMTP server instead of relaying in the local mailer or an intermediate relay SMTP server.

This release adds an example of an error handler function that logs the
error message, the filename, the line number, the function name, and the
class name, including a backtrace of all the function calls that lead to
the line where the error occurred.