XMLSec 1.5.5 no longer has a dbf attribute to set

Change the WhitespaceIgnoringDocumentSerializer to not reference that
variable. The code that referenced it appeared not to have the expected
effect in any case.
Change log message so it passes a single string to trace, not an array

The varargs version of Logger.trace was being called when it appears the
intention was to call the version that took 1 Object parameter.
Merge branch 'fix/fix-compiler-errors-triggered-by-upstream-changes'
Merge branch 'master' of https://github.com/wired-mind/Vramel
Log when the backlog for a particular endpoint has cleared
Log when messages are send to vertx event-bus on success and failure
Add comments and add context to exception message
Make concurrent thread count and event-bus send timeout configurable
Use the configured event-bus send timeout rather than a hard-coded value
Add log message explaining how the flows are constructed
Merge pull request #2 from WFMP/feature/make-thread-count-and-send-timeout-configparams

make thread count and send timeout configparams
Merge pull request #2 from WFMP/master

Update vramel with peter's changes