Hopac 0.0.0.45

Added basic Stream.buffer combinator. Renamed Stream.subscribe* to Stream.consume* to better describe semantics. Doc refinements. Added Stream.pullOn, Stream.skipWhileJob, Stream.skipWhileFun, Stream.pullOn, Stream.foldBack, Stream.mapIgnore, Stream.ambAll, Stream.appendAll, Stream.mergeAll and Stream.switchAll Fixed to start reading the serialized variable immediately as documented. Added Stream.subscribe* as a shorthand for Stream.iter* |> queue. Added mutable Stream.Property<'x> that generates property change notifications for e.g. WPF data binding. Added doFinalizeJob and doFinalizeFun. Experimental wrapper for streams that tracks space safety via phantom types. Changed groupByJob and groupByFun to take an additional function/job for forming new groups. Added Stream.tailsMapFun and Stream.initsMapFun these are useful for lifting the Stream.tails and Stream.inits functions. Added keepFollowing1 and renamed keepLatest to keepPreceding to make the naming more symmetric although the concepts of "following" and "preceding" aren't really fully symmetric (unless you allow time travel). A slightly more performant implementation of keepLatestFuns. Renamed from lazify to keepLatest. Lazification of live streams. Rethinking timing and throttling operations. Generalized joinWith and mapJoin. There is no sleep, only timeOut. Added ability to directly bind observables in job computation expressions. Removed superfluous methods from Async.OnWithSchedulerBuilder.