As said before; `lib_ledger` was meant to be a general abstraction to
any underlying CLI ledger.
But, between C++ `ledger` and Ledger Hardware Wallet, this abstraction
has become too confusing and counterproductive.
Since `hledger` will be the underlying implementation for the forseeable
future, all doubt should now be removed.
Since inception, the intent was to abstract the "interface" to allow for
a general-purpose CLI accounting ledger. However, there appears to be
confusion about whether the underlying implementation is `ledger`
accounting software or `hledger` accounting software.
So, making it clearer that it's `hledger` accounting software (although,
will continue to keep the `ledger` command for backwards-compatibility).
The original intent of the `ledger` facade was to describe a general
purpose "ledger" command abstraction; not specifically the `ledger`
software (predecessor to hledger) nor the `ledger` hardware device.
As `hledger` is currently the exclusive internal "ledger" component,
adding `hledger` as an alias seems to be an appropriate-enough addition
that won't break existing abstraction/functionality.
