v1.4.1 - Rules validation minimal required fields

What's Changed

• docs: update examples with v1.4.0 features by @cristianoliveira in #189
• bump(nix): latest version by @cristianoliveira in #190
• feat: validates all rules before start watcher by @cristianoliveira in #194
• feat: allows use either 'change' or/and 'run_on_init' property by @cristianoliveira in #198
• chore: bump minor version by @cristianoliveira in #199

Full Changelog: v1.4.0...v1.4.1