v0.3.0

Minor Changes

• Immediate/delayed first run: Add immediate and delay options so the first callback can run right away or after a configurable delay (e.g., "10s").
• Overrun protection: Add overrunProtection (default: true) to skip starting a new run if the previous execution is still running; tracks skippedExecutions in metrics.
• Pluggable persistence: Refactor persistence to use providers. Add FilePersistenceProvider (JSON on disk) and RedisPersistenceProvider (single-key JSON via injected client). New persistence.strategy and persistence.provider options.

Features

• New Cron options: immediate, delay, overrunProtection.
• New metrics: skippedExecutions.
• New persistence API: PersistenceProvider with save/load and types for persisted state.
• Export providers from package API: FilePersistenceProvider, RedisPersistenceProvider.

Fixes

• Parser: Correct @on_<day> mapping to Sunday=0…Saturday=6, fix @every_<n>_months to run on day 1 (0 0 0 1 */n *), and @every_<n>_dayOfWeek to */n on day-of-week.
• Types: Replace Timer with ReturnType<typeof setTimeout|setInterval> for portability.
• Build: Replace @/lib path aliases in source with relative imports to avoid bundler resolution issues.
• Packaging: Set module to dist/index.js, move @changesets/cli to devDependencies, ensure Changesets access is public.

Tests

• Add tests for immediate/delayed first run and overrun protection.
• Add provider-focused tests and shared test utilities for persistence (file and Redis via a fake client).