# Functions
NewImmutableTree returns MTree from given db at given height Warning: returns the MTree interface, but you should only use ReadOnlyTree.
NewMutableTree creates and returns new MutableTree using given db.
# Structs
ImmutableTree used for CheckState: API and CheckTx calls.
# Interfaces
MTree mutable tree, used for txs delivery.
ReadOnlyTree used for CheckState: API and CheckTx calls.