fix wrong order of mount and unmount when streamed #272
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The logic of streamed unmount hooks has a flaw. It uses
PostPatchHooks
which are not guaranteed to be run before all mount hooks of the next patch-iteration. This PR now usesUpdateHook
for mirroring streamed unmount hooks. This will always be done before any mount hook which is called from an insert or post patch hook. And importantly it also needs to be done after thePrePatchHooks
because of thunks and because prepatch can be called more often than update by snabbdom.Based on #273