please make log4j "provided" rather than compile if it's really optionally

[ymenager]

POM comment says log4j is optional.
If that's really the case please set it scope to "provided" so that people don't have automatically added to their projects

[cowtowncoder]

Ok thanks, makes sense.

[cowtowncoder]

Fixed; also, published 3.1.4, should get to Maven central soon.