Looks really neat. Striking a balance between ease of use / simplicity and powerful features is a tough exercise but you did well. I can foresee the CLI being

Looks really neat. Striking a balance between ease of use / simplicity and powerful features is a tough exercise but you did well. I can foresee the CLI being quite useful to do away with the run-of-the-mill sed / awk / grep [...] mess. Specifically for the less CLI inclined people out there.