v1.8.0 of once

Want to run a piece of code once periodically (Once - Daily - Weekly - Monthly - On new build - On new version - Any period)? We cover your back. Changelog excerpt: - Feat: Add runUntilDoneand showUntilDoneto allow persistent actions until user dismissal. (Thanks to @MohamedGawdatfor the idea and initial implementation!) - Feat: Add markDoneutility to manually flag keys as completed. - Refactor: Replace manual leap-year logic with DateTime-based calculation for daysInMonth. - Fix: Resolve static analysis missing type annotations. - Tests: Add comprehensive test suite achieving 100% test coverage. - Docs: Added compr[...]