Boston-based test automation specialist Mabl has raised $20 million in a Series B funding round led by GV (formerly Google Ventures). Previous Mabl investors CRV and Amplify partners also contributed to the round, after investing in Mabl’s Series A round in February. Mabl provides test automation powered by machine learning, which, according to founders Dan Belcher and Izzy Azeri, automatically maintains tests and identifies regressions. Founded in 2016, Mabl beta tested its product in February this year and went into general availability in May. Instead of looking at the code level, Mabl looks at the front end and alerts developers to errors like increased load time, broken links or other problems, and displays the results in a dashboard. When it finds an issue, it flags the step in the process where the problem occured and sends a screenshot to the test or development team where they can analyze it and fix it if needed. Today, the company announced several new product features aimed at large enterprises, including features designed to meet strict cybersecurity requirements and make Mabl’s offer more versatile. The startup plans to invest the new funds in product development and talent. The company, which currently has 30 employees, plans to bring that number up to 70 in the next year.