Move filterDeltas from UnAlex to FpgaTimetagger.Pipe
hphoton: Expose HPhoton.Bin.Alex
Bin: Expose list forms of binning functions

This allows me to consume bins lazily
FpgaTimetagger: Export unwrapTimes
FpgaTimetagger.Alex: Unwrap times
Bin.Alex: Use ZipList Applicative instance

Oops!