- add translations to piecash of example_scripts from the official python binding
- add lock/unlock system (to more or less replicate official python binding ... but maybe not a good idea)
- add is_saved property to GncSession to test if something must be saved
- add wrapper on object lists returned by the session to retrieve easily a subobject (e.g. s.commodities.get(mnemonic="EUR"))
- add __repr__ for Commodity
- change default value of some transaction and split fields
- add sync between value and quantity on splits when they share currency/commodity
- fix bug on sync between post_date and slot["date-posted"] when post_date was None
- simplify single_transaction factory
- import GnucashExceptions to __init__ file
- update tests
- update README and relate test_example test