Minor clean up
Make expression implicit conversion generic, don't force to String
Log unknown messages
Fix recorder HTTPS, close #884
Exclude jaxen's dependencies on maven 1 static analysis plugins.
Merge pull request #885 from skuenzli/maven-dependency-failure

Exclude jaxen's dependencies on maven 1 static analysis plugins.
Minor clean up
Upgrade specs2 1.13, close #887
Upgrade redisclient 2.9, close #888
Revert back to specs2 1.12.3
Upgrade Scala 2.9.3-RC1, close #889
Correctly determine runStart and runEnd from log file, close #890
Correctly determine the bucket for a timestamp equals to max, close #891
Have Gatling built with JDK7, close #883
expression doesn't have to be a val
Fix logger
Upgrade Akka 2.0.5, close #892
Initialize spec for RegexExtractor
Fix filter (and/or precedence)
Fix reportsOnly on Maven plugin, close #893