Reunifaction/refactor between data/ledger.go and ledger/*.go

[ian-algorand]

data/ledger.go
{{// The Ledger object in this (data) package provides a wrapper around the
// Ledger from the ledger package. The reason for this is compatibility
// with the existing callers of the previous ledger API, without increasing
// the complexity of the ledger.Ledger code. This Ledger object also
// implements various wrappers that return subsets of data exposed by
// ledger.Ledger, or return it in different forms, or return it for the
// latest round (as opposed to arbitrary rounds).}}

Is there some reunification/refactor possible between data/ledger.go and ledger/*.go ?

[ian-algorand]

deferred