growand2: Subtree (And) growth based on PIs
In ningshi/ATEN: ATEN

A helper function for running tree-growth while each leaf is a prime implicant

growand2(
  tree,
  subtree,
  pis,
  maxK,
  currentnodes,
  allnodes,
  penalty = FALSE,
  dec
)

`tree`	An And/Or tree
`subtree`	A subtree, i.e. a prime implicant
`pis`	A list of prime implicants; Each prime implicant is a leaf
`maxK`	The size of the tree, or the maximum number of input genes; By defalt, maxK=8
`currentnodes`	The number of prime implicants that used for inferring a tree
`allnodes`	The number of genes in the Boolean network
`penalty`	TRUE or FALSE used to control the size of the tree
`dec`	An argument used to control the tree growth
`fast`	An argument used to indicate whether a sort is needed