Port encode (caesar shift).
ngrams: Fix encode.
ngrams: Implement & test shift.
build: Disable log buffering in test.
ngrams: Minor cleanup.
ngrams: Implement & test decodeShift.
test: Cleanup.
ngrams: Implement & test shift2/decodeShift2.
Rename ngrams to Ngrams & add section names.
Ngrams: Make Pdist a final case class.
pkg: Add StringW.index(Char): Option[Int].
Ngrams: Re-write encode.
pkg: Align.
pkg: Add RandomW.withSeed(Int/Long).
pkg: Add StringW.shuffed(Random).
build: Add signs pkg import.
pkg: Kill RandomW.withSeed(Int).
pkg: Add TraversableOnceW shuffle & randomChoice.
pkg: Grr, forward randomChoice from String to Traversable..
Ngrams: Implement general substitution cipher decode.