Feature request: hledger add: select from list of "similar transactions" instead of using first available

[chreekat]

Could look like:

...
Description:  foobar
Use one of these similar transactions to supply defaults?
    1. 2017/01/02 foobar | some stuff
    2. 2017/02/03 bazquux   (account: expenses:foobar)
Choose a number, or blank to continue with no defaults.
Use similar transaction: _

Perhaps limited to a reasonable number (5?), perhaps only available behind an option to add.