new test 513 -- it DOES not fail every time -- DAG implementation is not
detrministic
Issue 33 fix
extra changes for issue 33 fix
Merge branch 'develop' into bugfix/tree-witness
Merge branch 'develop' into bugfix/tree-witness
cosmetic changes
yet more cosmetic changes
remove dummy interfaces
Minor Refactoring of DAGBuilder
refactored NamedDAGBuilder
more on NamedDAGBuilder
minor changes in the DAG
reverted to pre-DAG changes
switch the log level to error for travis
Merge branch 'develop' into bugfix/tree-witness

Conflicts:
	quest-sesame/src/test/resources/logback-test.xml
disable test_513
Merge branch 'bugfix/tree-witness' into develop