Merge Request #10 - June

Features

• New Future::andThen that calls the next callback only if the future finishes with a value and no cancel is requested
• FutureBarrier can now be destroyed before the futures are finished
• FutureBarrier now forwards cancelation requests to the sub-futures
• waitForAll now returns a FutureSync
• Support cancelling remote calls
• Guarantee call and signal order, especially in remote case. Beware that since callbacks are asynchronous, the only way to benefit from this guarantee is to connect the futures and signals to an Actor.

Bugfixes

• Fix Strand::schedulerFor with T != void
• Fix compilation issues on VS2013
• Make asynchronous logging really lockfree (could cause a deadlock before)
• Remove spurious errors “No such signal” and “No such property”