That was my original thought but a Bloomberg article was confident that increasing levels of US employment were counterbalanced by falling inflation (already far below US target). We are not used to worrying about "too low" inflation but when average inflation gets below 1% (as it has in USA) then some goods and services are likely to be in negative inflation i.e. deflation. When that happens theory says people delay spending for months, even a few years, waiting for lower prices in the future - at least some theories say that. That would precipitate a stall, even retreat, in economic growth. Even if that doesn't happen, there is little reason to fear that the US economy is in danger of overheating so there is less impetus behind a rapid reduction of QE. Similarly, with low inflation, there is little need to increase interest rates - something that QE tends to keep low.
That, at least, is what I make of it. One thing is clear. Three of the currencies of the Big 5 emerging economies strengthened by a big stride yesterday so it looks like changes in the lira were not just down to local Turkish issues.