Added programmatic Hazelcast cluster manager test which uses constructor to set config
Merge branch 'master' of github.com:eclipse/vert.x
Added headWritten()
remove erroneous @Fluent and use warning for now on bad testComplete
Java8-ification, tweaks, and thread safety. Make sure Vert.x objects can be used from other threads - important in the embedded without verticle use case
Don't restrict AsyncFile to be used from context now it is threadsafe
Some work on sync/async context execution
Merge pull request #968 from eclipse/context_changes

Some work on sync/async context execution
Sanity check at end of test and fix ComplexHATest
Merge branch 'master' of github.com:eclipse/vert.x
stop the testsuite from drenching the system temp directory with temporary file diarrhoea
More temp file testsuite cleanup
Attach sources for test jars
Ensure correct end/close handler correct async behavior
Allow caching to be disabled
Merge branch 'master' of github.com:eclipse/vert.x
Improve a bit the tests
Remove the callCompletionHandler and use callCompletionHandlerAsync in EventBusImpl
Merge pull request #969 from eclipse/close-handler-async-behavior

Ensure correct end/close handler correct async behavior
a few small changes around async handlers