Encrypted Budget Files and Bug Fixes.

• Original Budget file extension renamed to .pf (still JSON serialised files)
• Introduced AES-256 password-protected, encrypted budget files (with extension .epf).
• Encryption library must be shipped external to the executable jar. Missing encryption library sees the executable degrade gracefully to the original budget file mode of operation.
• The budget file-name you specify at save-time selects whether to save original, or encrypted budget files.
• 3rd-party libraries are no longer stored in this repository. The gradle build script fetches them as needed.
• Project directory layout now matches typical gradle Java builds, simplifying the build script.
• Introduced JUnit and Mockito for unit-testing. File-handling methods now have unit-testing coverage.
• Upgraded to Gral 0.10.
• Fixed labelling of pie-chart bug introduced with switching to maven-central for Gral library retrieval.
• Fixed date editor bug in the inflation table.
• Fixed assertion bugs when executable jar is run with assertions active.

Budget Enhancements and Bug Fixes

• Re-released the source under the BSD-3 copyright licence.
• Fixed flaws in JSON file serialisation by switching 3rd-party libraries. This breaks file save format compatibility with the 0.1-alpha release.
• Budget Account Name and Detail is now editable.

Budget and Inflation Functions Introduced

• Personal Budget Tab with full undo/redo support allowing:
  • Recording of expense and income items at typical frequencies ranging from Daily to Yearly.
  • Optional filter toggling visibility of an expense or income item value being shown at other frequencies.
  • Assignment of expense items and income items to (currently hardcoded) categories.
  • Assignment of expense and income items to (currently hardcoded) accounts.
  • Cashflow analysis of of categories and accounts, identifying surplus and deficit amounts.
  • Overrall cashflow analysis of accounts, identifying overall surplus or deficit.
• Inflation Tab with full undo/redo support allowing:
  • Recording of (Australian) inflation figures over time along with personal commentary.
  • Value Conversion Calculator, allowing you to gauge how the value of money has changed over time.
• Full save/load functionality via JSON Serialisation.