import from ledger/hledger and similar plain text accounting formats

[simevo]

There are quite a few bookkeeping tools that use plain text files to store the ledger: https://plaintextaccounting.org

It would be useful to have scripts to import from those, in the first place the CoA, then transactions.

One could then import ledger examples and use them to create test cases:

• run hledger on the example -> get account balances
• import example ledger into django-ledger, run the reports -> compare balances with reference

Also interesting: import separate ledgers for each accounting period, consolidate them and get back the reports split over the accounting periods.

[elarroba]

@simevo thank you for requesting this feature... I think it would be great to support these open standards...
I will look in to it and add it to the road map... However, any pull requests are welcome to make the project move faster.
Thanks!