Fix an == that should have been equals in ConfigBeanImpl.java
Fix missing equals/hashCode on IgnoredWhitespace token
Add some `<?>` that Xlint:unchecked wanted
Make RenderComparator serializable just to silence findbugs
findbugs still reports some "serializable without void
constructors" but those are not accurate because we replace
the instance with another class before serializing.
- update all plugin versions
- drop the custom javadoc-sbt plugin in favor of sbt's native javadoc support
- update to a lift-json that's built against 2.9.2
