Replaces entity-sense references to "the Libra" with "the
organization"/"the collective" where Libra was being used as a
stand-in for the original "Castle" entity, and drops the redundant
"(like cooperatives)" parenthetical in DOCUMENTATION.md. Also swaps
the 🏰 emoji in the import helper for ⚖️.
Closes#12
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Simplifies the representation of journal entry lines by replacing separate debit and credit fields with a single 'amount' field.
Positive amounts represent debits, while negative amounts represent credits, aligning with Beancount's approach. This change improves code readability and simplifies calculations for balancing entries.