v0.10.14 was a false start, in that qubit widths that were in the domain of `Qrack::QPager` still didn't generally work.
In v0.10.15, we revert recent changes to the `Qrack::QEngine::ShuffleBuffers()` method used by `QPager`, to fix this issue. In the interim since last release, we also found a way to avoid copying state vectors in crossing the threshold from non-paged to paged qubit widths, while using Schmidt decomposition.
The major drawback is that use of `ShuffleBuffers()` is currently neither threaded nor asynchronous. (The hope was to convert _from_ threaded operation, which began to use too many hyperthreads, _to_ an asynchronous method, though the method call is currently serial and blocking.) However, users might notice better `QPager` performance overall than in weeks past, and conversion of `ShuffleBuffers()` to an asynchronous method is still planned.