hoon: add +lead and +late
For tacking some head or tail onto some noun, respectively.
++ tail |*(^ ,:+<+) :: get tail
++ test |=(^ =(+<- +<+)) :: equality
::
+++ lead |*(h=* |*(* [h +<])) :: put head
+++ late |*(t=* |*(* [+< t])) :: put tail
+::
:: # %containers
::
:: the most basic of data types
