add support for NTP, AUDIT, ALERT and CLOCK facility strings
LOGBACK-269 Added code enabling using AsyncAppenders appender-ref in groovy.
update akka link
Fix LOGBACK-885
Merge branch 'master' of github.com:qos-ch/logback
add support to log elapsedTime
Add 'D' pattern for elapsedTimeConverter
* Added support to the tomcat Server adaptor for correctly getting request start time. (Includes additional dependency on tomcat-coyote)
* Update layouts.html to document the addition of elapsedTime/D to the pattern support for IAccessEvent
* Modified AccessEvent.java to calculate the elapsedTime at construction of the event, instead of repeatedly in the getter.  This allows the value to be more easily seen in a debugger, and cleans up the code slightly.
Support suppressed exceptions in throwable converter
Move helper method to TeztHelper to allow reuse
More tests for suppressed exceptions
Root cause first converter supports suppressed exceptions
Remove unneeded null check

Check already exists inside called method
added Mikhail Mazursky to CLA list
Merge pull request #150 from ash2k/suppressed

Support suppressed exceptions
Fix JUL logger level reset (LOGBACK-906)

A NullPointerException occurred when setting a JUL logger's level to
null, which should have reset the logger level to the parent's effective
level. The null level was incorrectly propagated to context listeners,
leading to the NPE.

This patch propagates the logger's parent effective level.
Merge pull request #62 from andym102/master

Fix for LOGBACK-754
Merge pull request #51 from kalinichenko/master

detachLoggerContext removes LoggerContext from ContextSelector. BUT
context.getLogger will create it again. So it's much more proper to
log at first and detach context after that.

fixes #51
Fix SMTP error for multi-line subject (LOGBACK-865)

Truncates multi-line subjects to the first line to prevent an SMTP error.

fixes #147
* Fixed tabbing to be 2-spaces instead of 4
* changed direct access of timestamp field to use getTimstamp() instead inside of calculateElapsedTime.