Disable formatexpr if enabling formatprg (#178)

refactor: Use more expressive and consistend variable names

refactor: Make sure script-local references resolve to the right script

refactor: Use autocmd groups consistently instead of dodging lint

fix: Trigger finish_reconciling() when closing :Reconcile window

ci: Update vader workflow, make sure correct ledger variant set in tests

ci: Update vint workflow, use Python 3.10 to keep aging linter happy

feat: Allow manual fold markers in syntax folding mode

chore: Enable GH sponsors widget, FOSS life is hard

feat: Include accounts used in budgets in completion candidates

docs: Bring readme documentation up to speed from help file

docs: Overhaul VIM help documentation

feat: Reuse data collection options for command line completions

fix: Only strip paired leading+trailing parenthesis from account matches

feat: Add auto completion for account declarations