Shortened preamble detection pipeline. Refactored filtering and bit slicing.
Shortened preamble detection pipeline. Refactored filtering and bit slicing.

bemasher/rtlamr,bemasher/rtlamr,loverso/rtlamr-old,curtiszimmerman/rtlamr,nbred/rtlamr,nbred/rtlamr,jomolinare/rtlamr,ejschaefer/rtlamr