GnuCash account book integration for Pocketbook

This will be a *partial* API to GnuCash XML account books. It should read: * The hierarchy of accounts. * Enough information about transactions in each account to get a current balance for each account; or, if the current balance is stored, only that information. It should write full records for new transactions t...

Complete basic user interface for Pocketbook

The parts of this are: * Main window with transactions list * New transactions entry with account suggestion (using example accounts) * Preferences dialog