Bullhorn Inc., a Boston company that develops software for the staffing industry, has acquired a Cleveland software startup. The Boston company did not disclose the terms of its acquisition of Able but said the software startup's candidate-engagement and onboarding software is expected to help streamline the onboarding process for Bullhorn's clients, the Boston company said in a news release. Able's simple, automated technology can streamline complex hiring workflows and compliance challenges, and...